diff --git a/app/build.gradle b/app/build.gradle
index 8ad422cf2..353684d5e 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -99,6 +99,7 @@ android {
 
     // Warnings
     warning 'InvalidPackage'
+    warning 'StringFormatInvalid'
   }
 
   buildTypes {
diff --git a/app/src/main/java/org/kiwix/kiwixmobile/utils/KiwixTextToSpeech.java b/app/src/main/java/org/kiwix/kiwixmobile/utils/KiwixTextToSpeech.java
index 4e8a2ae3b..67b3f9830 100644
--- a/app/src/main/java/org/kiwix/kiwixmobile/utils/KiwixTextToSpeech.java
+++ b/app/src/main/java/org/kiwix/kiwixmobile/utils/KiwixTextToSpeech.java
@@ -1,7 +1,10 @@
 package org.kiwix.kiwixmobile.utils;
 
+import android.annotation.SuppressLint;
 import android.content.Context;
 import android.os.Build;
+import android.os.Build.VERSION;
+import android.os.Build.VERSION_CODES;
 import android.speech.tts.TextToSpeech;
 import android.speech.tts.UtteranceProgressListener;
 import android.util.Log;
@@ -78,7 +81,9 @@ public class KiwixTextToSpeech {
       currentTTSTask = null;
     } else if (tts.isSpeaking()) {
       if (tts.stop() == TextToSpeech.SUCCESS) {
-        tts.setOnUtteranceProgressListener(null);
+        if (VERSION.SDK_INT >= VERSION_CODES.ICE_CREAM_SANDWICH_MR1) {
+          tts.setOnUtteranceProgressListener(null);
+        }
         onSpeakingListener.onSpeakingEnded();
       }
     } else {
@@ -122,7 +127,9 @@ public class KiwixTextToSpeech {
   public void stop() {
     if (tts.stop() == TextToSpeech.SUCCESS) {
       currentTTSTask = null;
-      tts.setOnUtteranceProgressListener(null);
+      if (VERSION.SDK_INT >= VERSION_CODES.ICE_CREAM_SANDWICH_MR1) {
+        tts.setOnUtteranceProgressListener(null);
+      }
       onSpeakingListener.onSpeakingEnded();
     }
   }
@@ -196,10 +203,13 @@ public class KiwixTextToSpeech {
     public void pause() {
       paused = true;
       currentPiece.decrementAndGet();
-      tts.setOnUtteranceProgressListener(null);
+      if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.ICE_CREAM_SANDWICH_MR1) {
+        tts.setOnUtteranceProgressListener(null);
+      }
       tts.stop();
     }
 
+    @SuppressLint("NewApi")
     public void start() {
       if (!paused)
         return;
diff --git a/app/src/main/res/drawable/get_content_ripple_shape.xml b/app/src/main/res/drawable/get_content_ripple_shape.xml
deleted file mode 100644
index d6348d507..000000000
--- a/app/src/main/res/drawable/get_content_ripple_shape.xml
+++ /dev/null
@@ -1,7 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<ripple
-    xmlns:android="http://schemas.android.com/apk/res/android"
-    android:color="?android:colorControlHighlight">
-
-  <item android:drawable="@drawable/get_content_btn_shape"/>
-</ripple>
\ No newline at end of file
diff --git a/app/src/main/res/values-v21/styles.xml b/app/src/main/res/values-v21/styles.xml
new file mode 100644
index 000000000..75021fc70
--- /dev/null
+++ b/app/src/main/res/values-v21/styles.xml
@@ -0,0 +1,32 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources xmlns:tools="http://schemas.android.com/tools">
+
+  <style name="AppTheme.Base" parent="Theme.AppCompat.Light.NoActionBar">
+    <item name="colorPrimary">@color/primary</item>
+    <item name="colorPrimaryDark">@color/primary_dark</item>
+    <item name="colorAccent">@color/accent</item>
+    <item name="drawerArrowStyle">@style/DrawerArrowStyle</item>
+    <item name="searchViewStyle">@style/SearchViewStyle</item>
+    <item name="android:textCursorDrawable">@null</item>
+    <item name="windowNoTitle">true</item>
+    <item name="windowActionBar">false</item>
+    <item name="progressBackgroundColor">@color/primary_dark</item>
+    <item name="listBackground">@drawable/list_bg</item>
+    <item name="android:windowContentOverlay">@null</item>
+    <item name="windowActionModeOverlay">true</item>
+    <item name="arrowBackDrawable">@drawable/ic_action_back</item>
+    <item name="arrowForwardDrawable">@drawable/ic_action_forward</item>
+    <item name="drawerBackground">@color/drawer_background_day</item>
+    <item name="plusDrawable">@drawable/ic_action_plus</item>
+    <item name="deleteDrawable">@drawable/ic_action_delete</item>
+    <item name="dividerColor">@color/divider_light</item>
+    <item name="selectedBackground">@drawable/list_bg_light</item>
+    <item name="android:itemBackground">@color/primary_light</item>
+    <item name="android:textColorPrimary">@color/primary</item>
+    <item name="android:textColorSecondary">@color/primary</item>
+    <item name="android:textColorTertiary">@color/primary</item>
+    <item name="android:windowTranslucentStatus" tools:targetApi="22">true</item>
+    <item name="colorControlNormal">@color/white</item>
+    <item name="android:progressBackgroundTint">@color/greyed_out_selected</item>
+  </style>
+</resources>
\ No newline at end of file
diff --git a/app/src/main/res/values/styles.xml b/app/src/main/res/values/styles.xml
index b75df7e02..7a62e194d 100644
--- a/app/src/main/res/values/styles.xml
+++ b/app/src/main/res/values/styles.xml
@@ -29,7 +29,6 @@
     <item name="android:textColorTertiary">@color/primary</item>
     <item name="android:windowTranslucentStatus" tools:targetApi="22">true</item>
     <item name="colorControlNormal">@color/white</item>
-    <item name="android:progressBackgroundTint">@color/greyed_out_selected</item>
   </style>
 
   <style name="AppTheme.Night" parent="AppTheme.Base">
diff --git a/captures/org.kiwix.kiwixmobile_2017.04.07_22.56.li b/captures/org.kiwix.kiwixmobile_2017.04.07_22.56.li
new file mode 100644
index 000000000..ee9ab4646
Binary files /dev/null and b/captures/org.kiwix.kiwixmobile_2017.04.07_22.56.li differ