diff --git a/source-code/app/src/main/java/org/buildmlearn/toolkit/activity/AboutBuildmLearn.java b/source-code/app/src/main/java/org/buildmlearn/toolkit/activity/AboutBuildmLearn.java
index 029c9a1f..c6d53bb1 100644
--- a/source-code/app/src/main/java/org/buildmlearn/toolkit/activity/AboutBuildmLearn.java
+++ b/source-code/app/src/main/java/org/buildmlearn/toolkit/activity/AboutBuildmLearn.java
@@ -32,11 +32,11 @@ protected void onCreate(Bundle savedInstanceState) {
             pInfo = getPackageManager().getPackageInfo(getPackageName(), 0);
             String version = pInfo.versionName;
             assert findViewById(R.id.app_version) != null;
-            ((TextView) findViewById(R.id.app_version)).setText(String.format(Locale.ENGLISH, "Version: %s", version));
+            ((TextView) findViewById(R.id.app_version)).setText(String.format(Locale.ENGLISH, getString(R.string.Version)+ version));
         } catch (PackageManager.NameNotFoundException e) {
             assert findViewById(R.id.app_version) != null;
             assert ((TextView) findViewById(R.id.app_version)) != null;
-            ((TextView) findViewById(R.id.app_version)).setText("Version: 1.0");
+            ((TextView) findViewById(R.id.app_version)).setText(R.string.Version1);
             e.printStackTrace();
         }
 
diff --git a/source-code/app/src/main/java/org/buildmlearn/toolkit/activity/DeepLinkerActivity.java b/source-code/app/src/main/java/org/buildmlearn/toolkit/activity/DeepLinkerActivity.java
index bcbaf985..dc6d1106 100644
--- a/source-code/app/src/main/java/org/buildmlearn/toolkit/activity/DeepLinkerActivity.java
+++ b/source-code/app/src/main/java/org/buildmlearn/toolkit/activity/DeepLinkerActivity.java
@@ -7,6 +7,7 @@
 import android.util.Log;
 import android.widget.Toast;
 
+import org.buildmlearn.toolkit.R;
 import org.buildmlearn.toolkit.constant.Constants;
 import org.buildmlearn.toolkit.model.SavedProject;
 import org.buildmlearn.toolkit.model.Template;
@@ -57,7 +58,7 @@ protected void onCreate(Bundle savedInstanceState) {
                     return;
                 }
             }
-            Toast.makeText(this, "Invalid project file", Toast.LENGTH_SHORT).show();
+            Toast.makeText(this, R.string.InvalidProjectFile, Toast.LENGTH_SHORT).show();
             finish();
         } catch (ParserConfigurationException | IOException | SAXException e) {
             e.printStackTrace();
diff --git a/source-code/app/src/main/java/org/buildmlearn/toolkit/activity/HomeActivity.java b/source-code/app/src/main/java/org/buildmlearn/toolkit/activity/HomeActivity.java
index 90f7cae1..8bff8d9c 100755
--- a/source-code/app/src/main/java/org/buildmlearn/toolkit/activity/HomeActivity.java
+++ b/source-code/app/src/main/java/org/buildmlearn/toolkit/activity/HomeActivity.java
@@ -211,7 +211,7 @@ public void onBackPressed() {
                 finish();
             }
             backPressedOnce=true;
-            Toast.makeText(this, "Tap back once more to exit.", Toast.LENGTH_SHORT).show();
+            Toast.makeText(this, R.string.DoubleExit, Toast.LENGTH_SHORT).show();
             new Handler().postDelayed(new Runnable()
             {
                 @Override
diff --git a/source-code/app/src/main/java/org/buildmlearn/toolkit/activity/TemplateEditor.java b/source-code/app/src/main/java/org/buildmlearn/toolkit/activity/TemplateEditor.java
index 8ac2f256..71489e11 100644
--- a/source-code/app/src/main/java/org/buildmlearn/toolkit/activity/TemplateEditor.java
+++ b/source-code/app/src/main/java/org/buildmlearn/toolkit/activity/TemplateEditor.java
@@ -74,7 +74,7 @@ public class TemplateEditor extends AppCompatActivity {
     private final Handler handlerToast = new Handler() {
         public void handleMessage(Message message) {
             if (message.arg1 == -1) {
-                Toast.makeText(TemplateEditor.this, "Build unsuccessful", Toast.LENGTH_SHORT).show();
+                Toast.makeText(TemplateEditor.this, R.string.Build_Unsuccessful, Toast.LENGTH_SHORT).show();
             }
         }
     };
@@ -107,7 +107,7 @@ protected void onCreate(Bundle savedInstanceState) {
         toolkit = (ToolkitApplication) getApplicationContext();
         templateId = getIntent().getIntExtra(Constants.TEMPLATE_ID, -1);
         if (templateId == -1) {
-            Toast.makeText(this, "Invalid template ID, closing Template Editor activity", Toast.LENGTH_LONG).show();
+            Toast.makeText(this, R.string.Invalid_Temp_ID, Toast.LENGTH_LONG).show();
             finish();
         }
 
@@ -421,7 +421,7 @@ public void onClick(DialogInterface dialog, int id) {
 
                             case R.id.share_project:
                                 savedFilePath = saveProject();
-                                if(("File already exists".equals(savedFilePath))){
+                                if((getString(R.string.FileAlready).equals(savedFilePath))){
                                     return;
                                 }
 
@@ -440,7 +440,7 @@ public void onClick(DialogInterface dialog, int id) {
                             case R.id.share_apk:
 
                                 savedFilePath = saveProject();
-                                if(("File already exists".equals(savedFilePath))){
+                                if((getString(R.string.FileAlready).equals(savedFilePath))){
                                     return;
                                 }
                                 if (savedFilePath == null || savedFilePath.length() == 0) {
@@ -463,7 +463,7 @@ public void onClick(DialogInterface dialog, int id) {
                                 signer.setSignerThreadListener(new SignerThread.OnSignComplete() {
                                     @Override
                                     public void onSuccess(final String path) {
-                                        Log.d(TAG, "APK generated");
+                                        Log.d(TAG, getString(R.string.APKGenerated));
                                         mApkGenerationDialog.dismiss();
 
                                         Uri fileUri = Uri.fromFile(new File(path));
@@ -505,7 +505,7 @@ public void onFail(Exception e) {
                                 break;
                             case R.id.save_apk:
                                 savedFilePath = saveProject();
-                                if(("File already exists".equals(savedFilePath))){
+                                if((getString(R.string.FileAlready).equals(savedFilePath))){
                                     return;
                                 }
                                 if (savedFilePath == null || savedFilePath.length() == 0) {
@@ -528,16 +528,16 @@ public void onFail(Exception e) {
                                 signer.setSignerThreadListener(new SignerThread.OnSignComplete() {
                                     @Override
                                     public void onSuccess(final String path) {
-                                        Log.d(TAG, "APK generated");
+                                        Log.d(TAG, getString(R.string.APKGenerated));
                                         mApkGenerationDialog.dismiss();
 
                                         runOnUiThread(new Runnable() {
                                             @Override
                                             public void run() {
                                                 AlertDialog dialog = new AlertDialog.Builder(TemplateEditor.this)
-                                                        .setTitle("Apk Generated")
-                                                        .setMessage("Apk file saved at " + path)
-                                                        .setPositiveButton("okay", new DialogInterface.OnClickListener() {
+                                                        .setTitle(R.string.APKGenerated)
+                                                        .setMessage(getString(R.string.APK_address) + path)
+                                                        .setPositiveButton(R.string.quiz_ok, new DialogInterface.OnClickListener() {
                                                             @Override
                                                             public void onClick(DialogInterface dialog, int which) {
                                                                 dialog.dismiss();
@@ -650,7 +650,7 @@ private String saveProject() {
         String title = ((EditText) findViewById(R.id.template_title)).getText().toString();
         if ("".equals(author)) {
             assert authorEditText != null;
-            authorEditText.setError("Author name is required");
+            authorEditText.setError(getString(R.string.valid_author));
         } else if ("".equals(title)) {
             assert titleEditText != null;
             titleEditText.setError(getResources().getString(R.string.title_error));
@@ -689,11 +689,11 @@ private String saveProject() {
                 Element dataElement = doc.createElement("data");
                 rootElement.appendChild(dataElement);
                 if (selectedTemplate.getItems(doc).size() == 0 || (selectedTemplate.getItems(doc).size() < 2 && (templateId == 5 || templateId == 7))) {
-                    Toast.makeText(this, "Unable to perform action: No Data", Toast.LENGTH_SHORT).show();
+                    Toast.makeText(this, R.string.NoData, Toast.LENGTH_SHORT).show();
                     return null;
                 }
                 if (selectedTemplate.getItems(doc).get(0).getTagName().equals("item") && (templateId == 5 || templateId == 7)) {
-                    Toast.makeText(this, "Unable to perform action: Add Meta Details", Toast.LENGTH_SHORT).show();
+                    Toast.makeText(this, R.string.AddMetaDetails, Toast.LENGTH_SHORT).show();
                     return null;
                 }
                 for (Element item : selectedTemplate.getItems(doc)) {
@@ -711,12 +711,12 @@ private String saveProject() {
                 boolean isSaved=FileUtils.saveXmlFile(toolkit.getSavedDir(), saveFileName, doc);
                 if(isSaved) {
                     oldFileName = toolkit.getSavedDir() + saveFileName;
-                    Toast.makeText(this, "Project Successfully Saved!", Toast.LENGTH_SHORT).show();
+                    Toast.makeText(this, R.string.Success_Save_Project, Toast.LENGTH_SHORT).show();
                     return oldFileName;
                 }
                 else {
-                    titleEditText.setError("File Already exists");
-                    return "File already exists";
+                    titleEditText.setError(getString(R.string.FileAlready));
+                    return getString(R.string.FileAlready);
                 }
 
             } catch (ParserConfigurationException e) {
@@ -730,7 +730,7 @@ private String saveProject() {
     public void onBackPressed() {
         super.onBackPressed();
         if (saveDraft() != null)
-            Toast.makeText(getApplicationContext(), "Saved in Draft!", Toast.LENGTH_SHORT).show();
+            Toast.makeText(getApplicationContext(), R.string.Draft_Saved, Toast.LENGTH_SHORT).show();
 
     }
 
@@ -776,7 +776,7 @@ private String saveDraft() {
             Element dataElement = doc.createElement("data");
             rootElement.appendChild(dataElement);
             if (selectedTemplate.getItems(doc).size() == 0) {
-                Toast.makeText(this, "Unable to perform action: No Data", Toast.LENGTH_SHORT).show();
+                Toast.makeText(this,R.string.NoData, Toast.LENGTH_SHORT).show();
                 return null;
             }
             for (Element item : selectedTemplate.getItems(doc)) {
@@ -827,12 +827,12 @@ private String saveDraft() {
     private void startSimulator() {
         String message = saveProject();
         if (message == null || message.equals("")) {
-            Toast.makeText(this, "Build unsuccessful", Toast.LENGTH_SHORT).show();
+            Toast.makeText(this, R.string.Build_Unsuccessful, Toast.LENGTH_SHORT).show();
             return;
         }
-        else if("File already exists".equals(message))
+        else if(getString(R.string.FileAlready).equals(message))
         {
-            titleEditText.setError("Template Already exists");
+            titleEditText.setError(getString(R.string.TemplateAlready));
             return;
         }
         Intent simulatorIntent = new Intent(getApplicationContext(), Simulator.class);
diff --git a/source-code/app/src/main/java/org/buildmlearn/toolkit/comprehensiontemplate/fragment/LastFragment.java b/source-code/app/src/main/java/org/buildmlearn/toolkit/comprehensiontemplate/fragment/LastFragment.java
index fc564358..3bd2057c 100644
--- a/source-code/app/src/main/java/org/buildmlearn/toolkit/comprehensiontemplate/fragment/LastFragment.java
+++ b/source-code/app/src/main/java/org/buildmlearn/toolkit/comprehensiontemplate/fragment/LastFragment.java
@@ -62,7 +62,7 @@ public boolean onMenuItemClick(MenuItem menuItem) {
                                 new AlertDialog.Builder(getActivity());
                         builder.setTitle(String.format("%1$s", getString(R.string.comprehension_about_us)));
                         builder.setMessage(getResources().getText(R.string.comprehension_about_text));
-                        builder.setPositiveButton("OK", null);
+                        builder.setPositiveButton(R.string.quiz_ok, null);
                         AlertDialog welcomeAlert = builder.create();
                         welcomeAlert.show();
                         assert welcomeAlert.findViewById(android.R.id.message) != null;
@@ -79,9 +79,9 @@ public boolean onMenuItemClick(MenuItem menuItem) {
 
         db.close();
 
-        ((TextView) rootView.findViewById(R.id.correct)).setText(String.format(Locale.getDefault(), "Total Correct : %1$d", stat[0]));
-        ((TextView) rootView.findViewById(R.id.wrong)).setText(String.format(Locale.getDefault(), "Total Wrong : %1$d", stat[1]));
-        ((TextView) rootView.findViewById(R.id.un_answered)).setText(String.format(Locale.getDefault(), "Total Unanswered : %1$d", stat[2]));
+        ((TextView) rootView.findViewById(R.id.correct)).setText(String.format(Locale.getDefault(), getString(R.string.correct_total)+ stat[0]));
+        ((TextView) rootView.findViewById(R.id.wrong)).setText(String.format(Locale.getDefault(), getString(R.string.total_wrong)+ stat[1]));
+        ((TextView) rootView.findViewById(R.id.un_answered)).setText(String.format(Locale.getDefault(), getString(R.string.total_unanswered)+ stat[2]));
 
         rootView.findViewById(R.id.restart).setOnClickListener(new View.OnClickListener() {
             @Override
diff --git a/source-code/app/src/main/java/org/buildmlearn/toolkit/comprehensiontemplate/fragment/MainFragment.java b/source-code/app/src/main/java/org/buildmlearn/toolkit/comprehensiontemplate/fragment/MainFragment.java
index 1e2ada4a..f842fd7d 100644
--- a/source-code/app/src/main/java/org/buildmlearn/toolkit/comprehensiontemplate/fragment/MainFragment.java
+++ b/source-code/app/src/main/java/org/buildmlearn/toolkit/comprehensiontemplate/fragment/MainFragment.java
@@ -63,7 +63,7 @@ public boolean onMenuItemClick(MenuItem menuItem) {
                                 new AlertDialog.Builder(getActivity());
                         builder.setTitle(String.format("%1$s", getString(R.string.comprehension_about_us)));
                         builder.setMessage(getResources().getText(R.string.comprehension_about_text));
-                        builder.setPositiveButton("OK", null);
+                        builder.setPositiveButton(R.string.quiz_ok, null);
                         AlertDialog welcomeAlert = builder.create();
                         welcomeAlert.show();
                         assert welcomeAlert.findViewById(android.R.id.message) != null;
diff --git a/source-code/app/src/main/java/org/buildmlearn/toolkit/comprehensiontemplate/fragment/QuestionFragment.java b/source-code/app/src/main/java/org/buildmlearn/toolkit/comprehensiontemplate/fragment/QuestionFragment.java
index da34a9e9..31f5c862 100644
--- a/source-code/app/src/main/java/org/buildmlearn/toolkit/comprehensiontemplate/fragment/QuestionFragment.java
+++ b/source-code/app/src/main/java/org/buildmlearn/toolkit/comprehensiontemplate/fragment/QuestionFragment.java
@@ -63,7 +63,7 @@ public boolean onMenuItemClick(MenuItem menuItem) {
                                 new AlertDialog.Builder(getActivity());
                         builder.setTitle(String.format("%1$s", getString(R.string.comprehension_about_us)));
                         builder.setMessage(getResources().getText(R.string.comprehension_about_text));
-                        builder.setPositiveButton("OK", null);
+                        builder.setPositiveButton(R.string.quiz_ok, null);
                         AlertDialog welcomeAlert = builder.create();
                         welcomeAlert.show();
                         assert welcomeAlert.findViewById(android.R.id.message) != null;
@@ -152,7 +152,7 @@ public boolean onMenuItemClick(MenuItem item) {
             });
         }
 
-        ((TextView) rootView.findViewById(R.id.question_title)).setText(String.format(Locale.getDefault(), "Question No : %1$s", questionId));
+        ((TextView) rootView.findViewById(R.id.question_title)).setText(String.format(Locale.getDefault(), getString(R.string.questionNo)+ questionId));
         ((TextView) rootView.findViewById(R.id.question)).setText(question);
         if (option_1 != null) {
             rootView.findViewById(R.id.radioButton1).setVisibility(View.VISIBLE);
diff --git a/source-code/app/src/main/java/org/buildmlearn/toolkit/dictationtemplate/fragment/DetailActivityFragment.java b/source-code/app/src/main/java/org/buildmlearn/toolkit/dictationtemplate/fragment/DetailActivityFragment.java
index 9f6aa472..cb6d0677 100644
--- a/source-code/app/src/main/java/org/buildmlearn/toolkit/dictationtemplate/fragment/DetailActivityFragment.java
+++ b/source-code/app/src/main/java/org/buildmlearn/toolkit/dictationtemplate/fragment/DetailActivityFragment.java
@@ -94,7 +94,7 @@ public boolean onMenuItemClick(MenuItem menuItem) {
                                 new AlertDialog.Builder(getActivity());
                         builder.setTitle(String.format("%1$s", getString(R.string.comprehension_about_us)));
                         builder.setMessage(getResources().getText(R.string.about_text_video));
-                        builder.setPositiveButton("OK", null);
+                        builder.setPositiveButton(R.string.quiz_ok, null);
                         AlertDialog welcomeAlert = builder.create();
                         welcomeAlert.show();
                         assert welcomeAlert.findViewById(android.R.id.message) != null;
@@ -153,7 +153,7 @@ public void onLoadFinished(Loader<Cursor> loader, final Cursor data) {
                     public void onClick(View v) {
                         progress = new ProgressDialog(getActivity());
                         progress.setCancelable(false);
-                        progress.setMessage("Loading TTS Engine...");
+                        progress.setMessage(getString(R.string.TTSLoading));
                         progress.show();
 
                         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
@@ -226,10 +226,10 @@ public void onInit(int status) {
                     int result = tts.setLanguage(Locale.US);
                     if (result == TextToSpeech.LANG_MISSING_DATA
                             || result == TextToSpeech.LANG_NOT_SUPPORTED) {
-                        Toast.makeText(getContext(), "US English is not supported. Playing in device's default installed language.", Toast.LENGTH_SHORT).show();
+                        Toast.makeText(getContext(), R.string.USEnglishNotSupported, Toast.LENGTH_SHORT).show();
                     }
                 } else {
-                    Toast.makeText(getContext(), "Initialization Failed!", Toast.LENGTH_SHORT).show();
+                    Toast.makeText(getContext(), R.string.TTSFAIL, Toast.LENGTH_SHORT).show();
                 }
             }
         });
diff --git a/source-code/app/src/main/java/org/buildmlearn/toolkit/dictationtemplate/fragment/MainActivityFragment.java b/source-code/app/src/main/java/org/buildmlearn/toolkit/dictationtemplate/fragment/MainActivityFragment.java
index 15526beb..dafebf0e 100644
--- a/source-code/app/src/main/java/org/buildmlearn/toolkit/dictationtemplate/fragment/MainActivityFragment.java
+++ b/source-code/app/src/main/java/org/buildmlearn/toolkit/dictationtemplate/fragment/MainActivityFragment.java
@@ -83,7 +83,7 @@ public View onCreateView(LayoutInflater inflater, ViewGroup container,
         rootView = inflater.inflate(R.layout.fragment_main_dict, container, false);
 
         Toolbar toolbar = (Toolbar) rootView.findViewById(R.id.card_toolbar);
-        toolbar.setTitle("List of Passages :");
+        toolbar.setTitle(R.string.ListPassage);
 
         Toolbar maintoolbar = (Toolbar) rootView.findViewById(R.id.toolbar_main);
         final String result[] = DataUtils.readTitleAuthor();
@@ -98,7 +98,7 @@ public boolean onMenuItemClick(MenuItem menuItem) {
                                 new AlertDialog.Builder(getActivity());
                         builder.setTitle(String.format("%1$s", getString(R.string.about_us_dict)));
                         builder.setMessage(getResources().getText(R.string.about_text_dict));
-                        builder.setPositiveButton("OK", null);
+                        builder.setPositiveButton(R.string.quiz_ok, null);
                         AlertDialog welcomeAlert = builder.create();
                         welcomeAlert.show();
                         assert welcomeAlert.findViewById(android.R.id.message) != null;
diff --git a/source-code/app/src/main/java/org/buildmlearn/toolkit/dictationtemplate/fragment/ResultActivityFragment.java b/source-code/app/src/main/java/org/buildmlearn/toolkit/dictationtemplate/fragment/ResultActivityFragment.java
index 087eef1e..cca50d5b 100644
--- a/source-code/app/src/main/java/org/buildmlearn/toolkit/dictationtemplate/fragment/ResultActivityFragment.java
+++ b/source-code/app/src/main/java/org/buildmlearn/toolkit/dictationtemplate/fragment/ResultActivityFragment.java
@@ -90,7 +90,7 @@ public boolean onMenuItemClick(MenuItem menuItem) {
                                 new AlertDialog.Builder(getActivity());
                         builder.setTitle(String.format("%1$s", getString(R.string.comprehension_about_us)));
                         builder.setMessage(getResources().getText(R.string.about_text_video));
-                        builder.setPositiveButton("OK", null);
+                        builder.setPositiveButton(R.string.quiz_ok, null);
                         AlertDialog welcomeAlert = builder.create();
                         welcomeAlert.show();
                         assert welcomeAlert.findViewById(android.R.id.message) != null;
@@ -150,7 +150,7 @@ public void onLoadFinished(Loader<Cursor> loader, final Cursor data) {
                 String result[] = obj.diff_prettyHtml(llDiffs);
 
                 int numTWords = passage.split(" ").length;
-                ((TextView) rootView.findViewById(R.id.score)).setText(String.format(Locale.ENGLISH, "SCORE : %s / %d", result[1], numTWords));
+                ((TextView) rootView.findViewById(R.id.score)).setText(String.format(Locale.ENGLISH, R.string.score+result[1]+"/"+numTWords));
 
                 ((TextView) rootView.findViewById(R.id.checked_text)).setText(Html.fromHtml(result[0]));
 
diff --git a/source-code/app/src/main/java/org/buildmlearn/toolkit/flashcardtemplate/fragment/LastFragment.java b/source-code/app/src/main/java/org/buildmlearn/toolkit/flashcardtemplate/fragment/LastFragment.java
index ed5c30ec..79f8d7b4 100644
--- a/source-code/app/src/main/java/org/buildmlearn/toolkit/flashcardtemplate/fragment/LastFragment.java
+++ b/source-code/app/src/main/java/org/buildmlearn/toolkit/flashcardtemplate/fragment/LastFragment.java
@@ -48,7 +48,7 @@ public boolean onMenuItemClick(MenuItem menuItem) {
                                 new AlertDialog.Builder(getActivity());
                         builder.setTitle(String.format("%1$s", getString(R.string.comprehension_about_us)));
                         builder.setMessage(getResources().getText(R.string.comprehension_about_text));
-                        builder.setPositiveButton("OK", null);
+                        builder.setPositiveButton(R.string.ok, null);
                         AlertDialog welcomeAlert = builder.create();
                         welcomeAlert.show();
                         assert welcomeAlert.findViewById(android.R.id.message) != null;
diff --git a/source-code/app/src/main/java/org/buildmlearn/toolkit/flashcardtemplate/fragment/MainFragment.java b/source-code/app/src/main/java/org/buildmlearn/toolkit/flashcardtemplate/fragment/MainFragment.java
index a42819a6..9ce72667 100644
--- a/source-code/app/src/main/java/org/buildmlearn/toolkit/flashcardtemplate/fragment/MainFragment.java
+++ b/source-code/app/src/main/java/org/buildmlearn/toolkit/flashcardtemplate/fragment/MainFragment.java
@@ -78,7 +78,7 @@ public boolean onMenuItemClick(MenuItem menuItem) {
                                 new AlertDialog.Builder(getActivity());
                         builder.setTitle(String.format("%1$s", getString(R.string.comprehension_about_us)));
                         builder.setMessage(getResources().getText(R.string.comprehension_about_text));
-                        builder.setPositiveButton("OK", null);
+                        builder.setPositiveButton(R.string.ok, null);
                         AlertDialog welcomeAlert = builder.create();
                         welcomeAlert.show();
                         assert welcomeAlert.findViewById(android.R.id.message) != null;
@@ -152,11 +152,11 @@ public boolean onMenuItemClick(MenuItem item) {
         String base64 = flash_cursor.getString(Constants.COL_BASE64);
 
         assert rootView.findViewById(R.id.intro_number) != null;
-        ((TextView) rootView.findViewById(R.id.intro_number)).setText(String.format(Locale.ENGLISH, "Card #%d of %d", Integer.parseInt(FlashId), numFlash));
+        ((TextView) rootView.findViewById(R.id.intro_number)).setText(String.format(Locale.ENGLISH, getString(R.string.card)+Integer.parseInt(FlashId)+getString(R.string.of_score)+numFlash));
         assert rootView.findViewById(R.id.question) != null;
         ((TextView) rootView.findViewById(R.id.question)).setText(question);
         assert rootView.findViewById(R.id.hint) != null;
-        ((TextView) rootView.findViewById(R.id.hint)).setText(String.format(Locale.ENGLISH, "Hint : %s", hint));
+        ((TextView) rootView.findViewById(R.id.hint)).setText(String.format(Locale.ENGLISH, getString(R.string.hint)+hint));
 
         Button prv = (Button) rootView.findViewById(R.id.previous);
         Button flip = (Button) rootView.findViewById(R.id.flip);
diff --git a/source-code/app/src/main/java/org/buildmlearn/toolkit/fragment/DraftsFragment.java b/source-code/app/src/main/java/org/buildmlearn/toolkit/fragment/DraftsFragment.java
index 513edb81..56f85f3c 100644
--- a/source-code/app/src/main/java/org/buildmlearn/toolkit/fragment/DraftsFragment.java
+++ b/source-code/app/src/main/java/org/buildmlearn/toolkit/fragment/DraftsFragment.java
@@ -152,7 +152,7 @@ public void onItemClick(AdapterView<?> parent, View view, int position, long id)
                 return;
             }
         }
-        Toast.makeText(getActivity(), "Invalid project file", Toast.LENGTH_SHORT).show();
+        Toast.makeText(getActivity(), R.string.InvalidProjectFile, Toast.LENGTH_SHORT).show();
     }
 
     private void setAdapter(DraftProjectAdapter adapter) {
@@ -368,11 +368,11 @@ private void deleteItems() {
         }
         if(deleted)
             if(selectedPositions.size()==1)
-                Toast.makeText(activity,"Project Successfully Deleted", Toast.LENGTH_SHORT).show();
+                Toast.makeText(activity, R.string.successDelete1, Toast.LENGTH_SHORT).show();
             else
-                Toast.makeText(activity,selectedPositions.size()+" Projects Successfully Deleted", Toast.LENGTH_SHORT).show();
+                Toast.makeText(activity,selectedPositions.size()+getString(R.string.sucessdelete2), Toast.LENGTH_SHORT).show();
         else
-            Toast.makeText(activity, "Project Deletion Failed!", Toast.LENGTH_SHORT).show();
+            Toast.makeText(activity, R.string.deletefail, Toast.LENGTH_SHORT).show();
     }
 
     /**
diff --git a/source-code/app/src/main/java/org/buildmlearn/toolkit/fragment/LoadApkFragment.java b/source-code/app/src/main/java/org/buildmlearn/toolkit/fragment/LoadApkFragment.java
index a47d512b..dc242633 100644
--- a/source-code/app/src/main/java/org/buildmlearn/toolkit/fragment/LoadApkFragment.java
+++ b/source-code/app/src/main/java/org/buildmlearn/toolkit/fragment/LoadApkFragment.java
@@ -349,7 +349,7 @@ public void onClick(View v) {
                 actionBar.setCustomView(R.layout.search_bar);
                 actionBar.setDisplayShowTitleEnabled(false);
                 editSearch = (EditText) actionBar.getCustomView().findViewById(R.id.editSearch);
-                editSearch.setHint("Enter Apk name");
+                editSearch.setHint(R.string.EnterAPK);
                 editSearch.addTextChangedListener(new TextWatcher() {
                     @Override
                     public void beforeTextChanged(CharSequence s, int start, int count, int after) {
@@ -454,11 +454,11 @@ private void deleteItems() {
         }
         if(deleted)
             if(selectedPositions.size()==1)
-                Toast.makeText(activity,"Project Successfully Deleted", Toast.LENGTH_SHORT).show();
+                Toast.makeText(activity,R.string.successDelete1, Toast.LENGTH_SHORT).show();
             else
-                Toast.makeText(activity,selectedPositions.size()+" Projects Successfully Deleted", Toast.LENGTH_SHORT).show();
+                Toast.makeText(activity,selectedPositions.size()+R.string.sucessdelete2, Toast.LENGTH_SHORT).show();
         else
-            Toast.makeText(activity, "Project Deletion Failed!", Toast.LENGTH_SHORT).show();
+            Toast.makeText(activity, R.string.deletefail, Toast.LENGTH_SHORT).show();
     }
 
     /**
diff --git a/source-code/app/src/main/java/org/buildmlearn/toolkit/fragment/LoadProjectFragment.java b/source-code/app/src/main/java/org/buildmlearn/toolkit/fragment/LoadProjectFragment.java
index 6a295fe8..f7415a32 100644
--- a/source-code/app/src/main/java/org/buildmlearn/toolkit/fragment/LoadProjectFragment.java
+++ b/source-code/app/src/main/java/org/buildmlearn/toolkit/fragment/LoadProjectFragment.java
@@ -199,7 +199,7 @@ public void onItemClick(AdapterView<?> parent, View view, int position, long id)
                 return;
             }
         }
-        Toast.makeText(getActivity(), "Invalid project file", Toast.LENGTH_SHORT).show();
+        Toast.makeText(getActivity(), R.string.InvalidProjectFile, Toast.LENGTH_SHORT).show();
     }
 
     private void setAdapter(SavedProjectAdapter adapter) {
@@ -388,7 +388,7 @@ public void onClick(View v) {
                 actionBar.setCustomView(R.layout.search_bar);
                 actionBar.setDisplayShowTitleEnabled(false);
                 editSearch = (EditText) actionBar.getCustomView().findViewById(R.id.editSearch);
-                editSearch.setHint("Enter name of Project");
+                editSearch.setHint(R.string.EnterProject);
                 editSearch.addTextChangedListener(new TextWatcher() {
                     @Override
                     public void beforeTextChanged(CharSequence s, int start, int count, int after) {
@@ -496,11 +496,11 @@ private void deleteItems() {
         }
         if(deleted)
             if(selectedPositions.size()==1)
-                Toast.makeText(activity,"Project Successfully Deleted", Toast.LENGTH_SHORT).show();
+                Toast.makeText(activity,R.string.successDelete1, Toast.LENGTH_SHORT).show();
             else
-                Toast.makeText(activity,selectedPositions.size()+" Projects Successfully Deleted", Toast.LENGTH_SHORT).show();
+                Toast.makeText(activity,selectedPositions.size()+R.string.sucessdelete2, Toast.LENGTH_SHORT).show();
         else
-            Toast.makeText(activity, "Project Deletion Failed!", Toast.LENGTH_SHORT).show();
+            Toast.makeText(activity, R.string.deletefail, Toast.LENGTH_SHORT).show();
     }
 
     /**
diff --git a/source-code/app/src/main/java/org/buildmlearn/toolkit/fragment/SettingsFragment.java b/source-code/app/src/main/java/org/buildmlearn/toolkit/fragment/SettingsFragment.java
index 2e61f7b5..b42b64b3 100644
--- a/source-code/app/src/main/java/org/buildmlearn/toolkit/fragment/SettingsFragment.java
+++ b/source-code/app/src/main/java/org/buildmlearn/toolkit/fragment/SettingsFragment.java
@@ -272,8 +272,7 @@ private class AsyncTaskRunner extends AsyncTask<String, Void, Float> {
         @Override
         protected void onPreExecute() {
             progressDialog = new ProgressDialog(getActivity());
-            progressDialog.setTitle("Deleting...");
-            progressDialog.setMessage("Deleting Temporary file");
+            progressDialog.setMessage(getString(R.string.deleting_temp_files));
             progressDialog.setProgressStyle(ProgressDialog.STYLE_SPINNER);
             progressDialog.setCancelable(false);
             progressDialog.show();
@@ -290,9 +289,9 @@ protected Float doInBackground(String... params) {
         protected void onPostExecute(Float size) {
             progressDialog.dismiss();
             if (size != 0) {
-                Toast.makeText(getActivity(), "Deleted " + size + " MB.", Toast.LENGTH_SHORT).show();
+                Toast.makeText(getActivity(), getString(R.string.deleted) + size + getString(R.string.MB), Toast.LENGTH_SHORT).show();
             } else {
-                Toast.makeText(getActivity(), "No Temp Files Found!", Toast.LENGTH_SHORT).show();
+                Toast.makeText(getActivity(), R.string.No_temp_files, Toast.LENGTH_SHORT).show();
             }
         }
     }
diff --git a/source-code/app/src/main/java/org/buildmlearn/toolkit/infotemplate/fragment/DetailActivityFragment.java b/source-code/app/src/main/java/org/buildmlearn/toolkit/infotemplate/fragment/DetailActivityFragment.java
index 65235096..93967dbf 100644
--- a/source-code/app/src/main/java/org/buildmlearn/toolkit/infotemplate/fragment/DetailActivityFragment.java
+++ b/source-code/app/src/main/java/org/buildmlearn/toolkit/infotemplate/fragment/DetailActivityFragment.java
@@ -82,7 +82,7 @@ public boolean onMenuItemClick(MenuItem menuItem) {
                                 new AlertDialog.Builder(getActivity());
                         builder.setTitle(String.format("%1$s", getString(R.string.comprehension_about_us)));
                         builder.setMessage(getResources().getText(R.string.about_text_video));
-                        builder.setPositiveButton("OK", null);
+                        builder.setPositiveButton(getString(R.string.ok), null);
                         AlertDialog welcomeAlert = builder.create();
                         welcomeAlert.show();
                         assert welcomeAlert.findViewById(android.R.id.message) != null;
diff --git a/source-code/app/src/main/java/org/buildmlearn/toolkit/infotemplate/fragment/MainActivityFragment.java b/source-code/app/src/main/java/org/buildmlearn/toolkit/infotemplate/fragment/MainActivityFragment.java
index 084d1fd0..8e79a649 100644
--- a/source-code/app/src/main/java/org/buildmlearn/toolkit/infotemplate/fragment/MainActivityFragment.java
+++ b/source-code/app/src/main/java/org/buildmlearn/toolkit/infotemplate/fragment/MainActivityFragment.java
@@ -94,7 +94,7 @@ public boolean onMenuItemClick(MenuItem menuItem) {
                                 new AlertDialog.Builder(getActivity());
                         builder.setTitle(String.format("%1$s", getString(R.string.comprehension_about_us)));
                         builder.setMessage(getResources().getText(R.string.about_text_info));
-                        builder.setPositiveButton("OK", null);
+                        builder.setPositiveButton(getString(R.string.ok), null);
                         AlertDialog welcomeAlert = builder.create();
                         welcomeAlert.show();
                         assert welcomeAlert.findViewById(android.R.id.message) != null;
diff --git a/source-code/app/src/main/java/org/buildmlearn/toolkit/learnspelling/fragment/LastFragment.java b/source-code/app/src/main/java/org/buildmlearn/toolkit/learnspelling/fragment/LastFragment.java
index 6d4445c2..540659fa 100644
--- a/source-code/app/src/main/java/org/buildmlearn/toolkit/learnspelling/fragment/LastFragment.java
+++ b/source-code/app/src/main/java/org/buildmlearn/toolkit/learnspelling/fragment/LastFragment.java
@@ -57,7 +57,7 @@ public boolean onMenuItemClick(MenuItem menuItem) {
                                 new AlertDialog.Builder(getActivity());
                         builder.setTitle(String.format("%1$s", getString(R.string.comprehension_about_us)));
                         builder.setMessage(getResources().getText(R.string.comprehension_about_text));
-                        builder.setPositiveButton("OK", null);
+                        builder.setPositiveButton(getString(R.string.ok), null);
                         AlertDialog welcomeAlert = builder.create();
                         welcomeAlert.show();
                         assert welcomeAlert.findViewById(android.R.id.message) != null;
@@ -77,11 +77,11 @@ public boolean onMenuItemClick(MenuItem menuItem) {
         int stat[] = db.getStatistics();
 
         assert rootView.findViewById(R.id.correct) != null;
-        ((TextView) rootView.findViewById(R.id.correct)).setText(String.format(Locale.getDefault(), "Total Correct : %1$d", stat[0]));
+        ((TextView) rootView.findViewById(R.id.correct)).setText(String.format(Locale.getDefault(), getString(R.string.correct_total)+ stat[0]));
         assert rootView.findViewById(R.id.wrong) != null;
-        ((TextView) rootView.findViewById(R.id.wrong)).setText(String.format(Locale.getDefault(), "Total Wrong : %1$d", stat[1]));
+        ((TextView) rootView.findViewById(R.id.wrong)).setText(String.format(Locale.getDefault(), getString(R.string.total_wrong)+ stat[1]));
         assert rootView.findViewById(R.id.un_answered) != null;
-        ((TextView) rootView.findViewById(R.id.un_answered)).setText(String.format(Locale.getDefault(), "Total Unanswered : %1$d", stat[2]));
+        ((TextView) rootView.findViewById(R.id.un_answered)).setText(String.format(Locale.getDefault(), getString(R.string.total_unanswered)+stat[2]));
 
         rootView.findViewById(R.id.restart).setOnClickListener(new View.OnClickListener() {
             @Override
diff --git a/source-code/app/src/main/java/org/buildmlearn/toolkit/learnspelling/fragment/MainFragment.java b/source-code/app/src/main/java/org/buildmlearn/toolkit/learnspelling/fragment/MainFragment.java
index c84d4d4b..29ab8f36 100644
--- a/source-code/app/src/main/java/org/buildmlearn/toolkit/learnspelling/fragment/MainFragment.java
+++ b/source-code/app/src/main/java/org/buildmlearn/toolkit/learnspelling/fragment/MainFragment.java
@@ -83,7 +83,7 @@ public boolean onMenuItemClick(MenuItem menuItem) {
                                 new AlertDialog.Builder(getActivity());
                         builder.setTitle(String.format("%1$s", getString(R.string.comprehension_about_us)));
                         builder.setMessage(getResources().getText(R.string.comprehension_about_text));
-                        builder.setPositiveButton("OK", null);
+                        builder.setPositiveButton(getString(R.string.ok), null);
                         AlertDialog welcomeAlert = builder.create();
                         welcomeAlert.show();
                         assert welcomeAlert.findViewById(android.R.id.message) != null;
@@ -156,7 +156,7 @@ public boolean onMenuItemClick(MenuItem item) {
 
         mBtn_Spell.setEnabled(false);
         mBtn_Skip.setEnabled(false);
-        mTv_WordNumber.setText(String.format(Locale.ENGLISH, "Word #%d of %d", Integer.parseInt(spellId), numQues));
+        mTv_WordNumber.setText(String.format(Locale.ENGLISH, getString(R.string.R_string_word)+Integer.parseInt(spellId)+getString(R.string.of_score)+numQues));
 
         Cursor spell_cursor = db.getSpellingCursorById(Integer.parseInt(spellId));
         spell_cursor.moveToFirst();
@@ -210,7 +210,7 @@ public void onClick(View v) {
 
                 progress = new ProgressDialog(mContext);
                 progress.setCancelable(false);
-                progress.setMessage("Loading TTS Engine...");
+                progress.setMessage(getString(R.string.TTSLoading));
                 progress.show();
 
 
@@ -265,7 +265,7 @@ public void onClick(View v) {
     private void submit(String spell) {
         String input = mEt_Spelling.getText().toString().trim();
         if (input.length() == 0) {
-            Toast.makeText(mContext, "Please enter the spelling",
+            Toast.makeText(mContext, R.string.EnterSpelling,
                     Toast.LENGTH_SHORT).show();
 
         } else {
@@ -319,10 +319,10 @@ public void onInit(int status) {
                     int result = tts.setLanguage(Locale.US);
                     if (result == TextToSpeech.LANG_MISSING_DATA
                             || result == TextToSpeech.LANG_NOT_SUPPORTED) {
-                        Toast.makeText(mContext, "US English is not supported. Playing in device's default installed language.", Toast.LENGTH_SHORT).show();
+                        Toast.makeText(mContext, R.string.USEnglishNotSupported, Toast.LENGTH_SHORT).show();
                     }
                 } else {
-                    Toast.makeText(mContext, "Initialization Failed!", Toast.LENGTH_SHORT).show();
+                    Toast.makeText(mContext, R.string.TTSFAIL, Toast.LENGTH_SHORT).show();
                 }
             }
         });
diff --git a/source-code/app/src/main/java/org/buildmlearn/toolkit/learnspelling/fragment/ResponseFragment.java b/source-code/app/src/main/java/org/buildmlearn/toolkit/learnspelling/fragment/ResponseFragment.java
index 7f6b5b6d..e15323ec 100644
--- a/source-code/app/src/main/java/org/buildmlearn/toolkit/learnspelling/fragment/ResponseFragment.java
+++ b/source-code/app/src/main/java/org/buildmlearn/toolkit/learnspelling/fragment/ResponseFragment.java
@@ -67,7 +67,7 @@ public boolean onMenuItemClick(MenuItem menuItem) {
                                 new AlertDialog.Builder(getActivity());
                         builder.setTitle(String.format("%1$s", getString(R.string.comprehension_about_us)));
                         builder.setMessage(getResources().getText(R.string.comprehension_about_text));
-                        builder.setPositiveButton("OK", null);
+                        builder.setPositiveButton(getString(R.string.ok), null);
                         AlertDialog welcomeAlert = builder.create();
                         welcomeAlert.show();
                         assert welcomeAlert.findViewById(android.R.id.message) != null;
@@ -142,16 +142,16 @@ public boolean onMenuItemClick(MenuItem item) {
 
         TextView mTv_WordNumber = (TextView) rootView.findViewById(R.id.intro_number);
 
-        mTv_WordNumber.setText(String.format(Locale.ENGLISH, "Word #%d of %d", Integer.parseInt(spellId), numQues));
+        mTv_WordNumber.setText(String.format(Locale.ENGLISH, getString(R.string.R_string_word)+Integer.parseInt(spellId)+getString(R.string.of_score)+numQues));
 
         String message;
         String word_text_view;
         if (word.trim().equalsIgnoreCase(answered)) {
-            message = "Great! You got it right.";
+            message = getString(R.string.RightAnswer);
             word_text_view = "Correct Spell: &nbsp<font color='green'>" + word + "</font>";
         } else {
-            message = "Oops! You got it wrong.";
-            word_text_view = "Correct Spell:&nbsp <font color=\"#7fe77f\">" + word + "</font> <br />You entered:&nbsp <font color=\"#ee9797\">" + answered + "</font>";
+            message = getString(R.string.WrongAnswer);
+            word_text_view = "Correct Spell:<font color=\"#7fe77f\">" + word + "</font> <br />You entered:&nbsp <font color=\"#ee9797\">" + answered + "</font>";
         }
 
         assert rootView.findViewById(R.id.intro_response) != null;
diff --git a/source-code/app/src/main/java/org/buildmlearn/toolkit/matchtemplate/fragment/DetailFragment.java b/source-code/app/src/main/java/org/buildmlearn/toolkit/matchtemplate/fragment/DetailFragment.java
index 70310c3b..9ecc24c0 100644
--- a/source-code/app/src/main/java/org/buildmlearn/toolkit/matchtemplate/fragment/DetailFragment.java
+++ b/source-code/app/src/main/java/org/buildmlearn/toolkit/matchtemplate/fragment/DetailFragment.java
@@ -127,7 +127,7 @@ public boolean onMenuItemClick(MenuItem menuItem) {
                                 new AlertDialog.Builder(getActivity());
                         builder.setTitle(String.format("%1$s", getString(R.string.comprehension_about_us)));
                         builder.setMessage(getResources().getText(R.string.comprehension_about_text));
-                        builder.setPositiveButton("OK", null);
+                        builder.setPositiveButton(getString(R.string.ok), null);
                         AlertDialog welcomeAlert = builder.create();
                         welcomeAlert.show();
                         assert welcomeAlert.findViewById(android.R.id.message) != null;
@@ -167,7 +167,7 @@ public boolean onMenuItemClick(MenuItem menuItem) {
         listViewB.addHeaderView(header_B);
         listViewB.addFooterView(footer_B);
 
-        ((TextView) rootView.findViewById(R.id.score)).setText(String.format(Locale.ENGLISH, "Score : %d of %d", countScore, matchListA.size()));
+        ((TextView) rootView.findViewById(R.id.score)).setText(String.format(Locale.ENGLISH, getString(R.string.score)+countScore+getString(R.string.of_score)+matchListA.size()));
 
         if (savedInstanceState != null && savedInstanceState.containsKey(SELECTED_KEY_A) && savedInstanceState.containsKey(SELECTED_KEY_B)) {
             mPositionA = savedInstanceState.getInt(SELECTED_KEY_A);
diff --git a/source-code/app/src/main/java/org/buildmlearn/toolkit/matchtemplate/fragment/MainFragment.java b/source-code/app/src/main/java/org/buildmlearn/toolkit/matchtemplate/fragment/MainFragment.java
index 5362768a..6b66f16d 100644
--- a/source-code/app/src/main/java/org/buildmlearn/toolkit/matchtemplate/fragment/MainFragment.java
+++ b/source-code/app/src/main/java/org/buildmlearn/toolkit/matchtemplate/fragment/MainFragment.java
@@ -144,7 +144,7 @@ public boolean onMenuItemClick(MenuItem menuItem) {
                                 new AlertDialog.Builder(getActivity());
                         builder.setTitle(String.format("%1$s", getString(R.string.comprehension_about_us)));
                         builder.setMessage(getResources().getText(R.string.comprehension_about_text));
-                        builder.setPositiveButton("OK", null);
+                        builder.setPositiveButton(getString(R.string.ok), null);
                         AlertDialog welcomeAlert = builder.create();
                         welcomeAlert.show();
                         assert welcomeAlert.findViewById(android.R.id.message) != null;
diff --git a/source-code/app/src/main/res/values/strings.xml b/source-code/app/src/main/res/values/strings.xml
index e69b290c..56302d5f 100644
--- a/source-code/app/src/main/res/values/strings.xml
+++ b/source-code/app/src/main/res/values/strings.xml
@@ -418,5 +418,46 @@
     <string name="title_valid">Title must start with alphanumeric</string>
     <string name="valid_msg_name">Enter valid name</string>
     <string name="same_options">Two or more options are same.</string>
+    <string name="score">Score :</string>
+    <string name="of_score">" of "</string>
+    <string name="ok">OK</string>
+    <string name="correct_total">"Total Correct : "</string>
+    <string name="total_wrong">"Total Wrong : "</string>
+    <string name="total_unanswered">"Total Unanswered : "</string>
+    <string name="R.string.word">"Word "</string>
+    <string name="TTSLoading">Loading TTS Engine…</string>
+    <string name="EnterSpelling">Please enter the spelling</string>
+    <string name="USEnglishNotSupported">US English is not supported. Playing in device\'s default installed language.</string>
+    <string name="TTSFAIL">Initialization Failed!</string>
+    <string name="RightAnswer">Great! You got it right.</string>
+    <string name="WrongAnswer">Oops! You got it wrong.</string>
+    <string name="InvalidProjectFile">Invalid project file</string>
+    <string name="successDelete1">Project Successfully Deleted</string>
+    <string name="sucessdelete2">" Projects Successfully Deleted"</string>
+    <string name="deletefail">Project Deletion Failed!</string>
+    <string name="EnterAPK">Enter Apk name</string>
+    <string name="EnterProject">Enter name of Project</string>
+    <string name="deleting_temp_files">Deleting Temporary files.</string>
+    <string name="No_temp_files">No Temp Files Found!</string>
+    <string name="deleted">"Deleted "</string>
+    <string name="MB">" MB."</string>
+    <string name="card">"Card "</string>
+    <string name="hint">"Hint : "</string>
+    <string name="ListPassage">List of Passages :</string>
+    <string name="questionNo">"Question No : "</string>
+    <string name="Version">"Version: "</string>
+    <string name="Version1">Version: 1.0</string>
+    <string name="DoubleExit">Tap back once more to exit.</string>
+    <string name="Build_Unsuccessful">Build unsuccessful</string>
+    <string name="Invalid_Temp_ID">Invalid template ID, closing Template Editor activity</string>
+    <string name="FileAlready">File already exists</string>
+    <string name="APKGenerated">APK generated</string>
+    <string name="APK_address">"Apk file saved at "</string>
+    <string name="valid_author">Author name is required</string>
+    <string name="NoData">Unable to perform action: No Data</string>
+    <string name="AddMetaDetails">Unable to perform action: Add Meta Details</string>
+    <string name="Success_Save_Project">Project Successfully Saved!</string>
+    <string name="Draft_Saved">Saved in Draft!</string>
+    <string name="TemplateAlready">Template Already exists</string>
 </resources>