diff --git a/vds-app/App/assets/buttonBg.png b/vds-app/App/assets/buttonBg.png
new file mode 100644
index 0000000..b1709a8
Binary files /dev/null and b/vds-app/App/assets/buttonBg.png differ
diff --git a/vds-app/App/components/Button.js b/vds-app/App/components/Button.js
index 1d89d81..7a41ba2 100644
--- a/vds-app/App/components/Button.js
+++ b/vds-app/App/components/Button.js
@@ -1,20 +1,26 @@
 import React from "react"
-import { View, TouchableOpacity, Text, StyleSheet } from "react-native"
+import { View, TouchableOpacity, Text, StyleSheet, ImageBackground } from "react-native"
 import { colors } from "../components/Variables"
 
+const bgImage = require("../assets/buttonBg.png")
+
 const styles = StyleSheet.create({
   button: {
     backgroundColor: colors.white_alpha,
     borderWidth: 4,
     borderColor: 'transparent',
     borderRadius: 10,
-    paddingHorizontal: 20,
+    //paddingHorizontal: 20,
     paddingVertical: 15,
     alignItems: "center",
     justifyContent: "center",
     width: "100%",
     marginTop: 15
   },
+  noPadding: {
+    paddingHorizontal: 0,
+    paddingVertical: 0,
+  },
   text: {
     color: colors.white,
     fontSize: 20,
@@ -36,11 +42,21 @@ const styles = StyleSheet.create({
     marginTop: 20,
     justifyContent: "space-between",
     overflow: "hidden",
-    borderRadius: 10
+    borderRadius: 20
+  },
+  buttonBg: {
+    flex: 1,
+    paddingVertical: 15,
+    height: '100%',
+    width: '100%',
+    resizeMode: 'cover'
+  },
+  buttonPadding: {
+    paddingHorizontal: 20
   }
 })
 
-export const Button = ({ text, subtitle = null, isBig = false, colorize = false, color = false, noPadding = false, noBorder = false, halfSize = false, hasShadow = false,  onPress = false }) => {
+export const Button = ({ text, subtitle = null, isBig = false, colorize = false, color = false, noPadding = false, noBorder = false, halfSize = false, hasShadow = false, hasBg = false,  onPress = false }) => {
 
   const buttonBig = isBig ? {fontSize: 25} : {}
   const isClicked = colorize.clicked == colorize.id
@@ -65,32 +81,53 @@ export const Button = ({ text, subtitle = null, isBig = false, colorize = false,
   }
 
   if(onPress) {
-    if(subtitle) {
-      return (
-        <TouchableOpacity onPress={onPress} style={[styles.button, buttonColor, planeButton, noBorderButton, isHalf]}>
-          <Text style={[styles.text, buttonBig, hasShadow ? styles.shadow : '', {fontWeight: "500"}]}>{text}</Text>
-          <Text style={[styles.subtitle, hasShadow ? styles.shadow : '']}>{subtitle}</Text>
-        </TouchableOpacity>
-      )
+    if(hasBg) {
+      if(subtitle) {
+        return (
+          <TouchableOpacity onPress={onPress} style={[styles.button, styles.noPadding, buttonColor, planeButton, noBorderButton, isHalf]}>
+            <ImageBackground source={bgImage} style={styles.buttonBg}>
+              <Text style={[styles.text, styles.buttonPadding, buttonBig, hasShadow ? styles.shadow : '', {fontWeight: "500"}]}>{text}</Text>
+              <Text style={[styles.subtitle, styles.buttonPadding, hasShadow ? styles.shadow : '']}>{subtitle}</Text>
+            </ImageBackground>
+          </TouchableOpacity>
+        )
+      } else {
+        return (
+          <TouchableOpacity onPress={onPress} style={[styles.button, styles.noPadding, buttonColor, planeButton, noBorderButton, isHalf]}>
+            <ImageBackground source={bgImage} style={styles.buttonBg}>
+              <Text style={[styles.text, styles.buttonPadding, buttonBig, hasShadow ? styles.shadow : '']}>{text}</Text>
+            </ImageBackground>
+          </TouchableOpacity>
+        )
+      }
     } else {
-      return (
-        <TouchableOpacity onPress={onPress} style={[styles.button, buttonColor, planeButton, noBorderButton, isHalf]}>
-          <Text style={[styles.text, buttonBig, hasShadow ? styles.shadow : '']}>{text}</Text>
-        </TouchableOpacity>
-      )
+      if(subtitle) {
+        return (
+          <TouchableOpacity onPress={onPress} style={[styles.button, buttonColor, planeButton, noBorderButton, isHalf]}>
+            <Text style={[styles.text, styles.buttonPadding, buttonBig, hasShadow ? styles.shadow : '', {fontWeight: "500"}]}>{text}</Text>
+            <Text style={[styles.subtitle, styles.buttonPadding, hasShadow ? styles.shadow : '']}>{subtitle}</Text>
+          </TouchableOpacity>
+        )
+      } else {
+        return (
+          <TouchableOpacity onPress={onPress} style={[styles.button, buttonColor, planeButton, noBorderButton, isHalf]}>
+            <Text style={[styles.text, styles.buttonPadding, buttonBig, hasShadow ? styles.shadow : '']}>{text}</Text>
+          </TouchableOpacity>
+        )
+      }
     }
   } else {
     if(subtitle) {
       return (
         <View style={[styles.button, buttonColor, planeButton, noBorderButton, isHalf]}>
-          <Text style={[styles.text, buttonBig, hasShadow ? styles.shadow : ''], {fontWeight: "500"}}>{text}</Text>
-          <Text style={[styles.subtitle, hasShadow ? styles.shadow : '']}>{subtitle}</Text>
+          <Text style={[styles.text, styles.buttonPadding, buttonBig, hasShadow ? styles.shadow : ''], {fontWeight: "500"}}>{text}</Text>
+          <Text style={[styles.subtitle, styles.buttonPadding, hasShadow ? styles.shadow : '']}>{subtitle}</Text>
         </View>
       )
     } else {
       return (
         <View style={[styles.button, buttonColor, planeButton, noBorderButton, isHalf]}>
-          <Text style={[styles.text, buttonBig, hasShadow ? styles.shadow : '']}>{text}</Text>
+          <Text style={[styles.text, styles.buttonPadding, buttonBig, hasShadow ? styles.shadow : '']}>{text}</Text>
         </View>
       )
     }
@@ -100,7 +137,7 @@ export const Button = ({ text, subtitle = null, isBig = false, colorize = false,
 
 export const ButtonContainer = ({ children, isBoxed = false}) => {
 
-  let boxedStyle = isBoxed ? {borderWidth: 3, borderColor: colors.white_alpha2} : {}
+  let boxedStyle = isBoxed ? {borderWidth: 2, borderColor: colors.white_alpha2} : {}
 
   return (
     <View style={[styles.buttonContainer, boxedStyle]}>{children}</View>
diff --git a/vds-app/App/components/Variables.js b/vds-app/App/components/Variables.js
index f581e12..b93e3f9 100644
--- a/vds-app/App/components/Variables.js
+++ b/vds-app/App/components/Variables.js
@@ -23,6 +23,7 @@ export const colors = {
 export const texts = {
   quizzes: "Seleziona un argomento",
   section_quizzes: "Quiz per argomento",
+  wrong_review: "Rivedi domande sbagliate",
   section_quizzes_subtitle: "Esercitati su argomenti specifici",
   exam: "Simulazione esame",
   exam_simulation: "30 domande in 30min",
diff --git a/vds-app/App/screens/Exam.js b/vds-app/App/screens/Exam.js
index 1a2d637..9b56ca5 100644
--- a/vds-app/App/screens/Exam.js
+++ b/vds-app/App/screens/Exam.js
@@ -37,7 +37,16 @@ const styles = StyleSheet.create({
     fontSize: 20,
     textAlign: "center",
     fontWeight: "600",
-    paddingVertical: 20
+    paddingTop: 5,
+    paddingBottom: 20
+  },
+  textCode: {
+    color: colors.white,
+    fontSize: 12,
+    textAlign: "center",
+    fontWeight: "500",
+    paddingTop: 20,
+    paddingBottom: 0
   },
   timer: {
     color: colors.white,
@@ -106,8 +115,6 @@ class Exam extends React.Component {
       }
     })
 
-    //tmpQuestions.forEach( (e) => { console.log(e.id) })
-
     this.props.navigation.navigate("Splash", {
       examQuestions: tmpQuestions
     })
@@ -142,13 +149,12 @@ class Exam extends React.Component {
           nextState.answerCorrect = false
           nextState.wrongAnswers = state.wrongAnswers
           nextState.wrongAnswers.push(
-            { text: question.question,
+            { question: question.question,
               id: question.id,
               clicked: id,
               answers: question.answers
             }
           )
-          //console.log(state.wrongAnswers)
         }
         return nextState
       },
@@ -219,6 +225,7 @@ class Exam extends React.Component {
         <SafeAreaView style={styles.safearea}>
           <Text style={styles.timer}>{new Date(this.state.timer * 1000).toISOString().substr(11, 8)}</Text>
           <View>
+            <Text style={styles.textCode}>{question.id}</Text>
             <Text style={styles.text}>{question.question}</Text>
 
             <ButtonContainer>
diff --git a/vds-app/App/screens/Info.js b/vds-app/App/screens/Info.js
index 5f8b9c8..9e9fa29 100644
--- a/vds-app/App/screens/Info.js
+++ b/vds-app/App/screens/Info.js
@@ -65,7 +65,7 @@ const styles = StyleSheet.create({
   textSmall: {
     lineHeight: 23,
     marginTop: 15,
-    borderRadius: 10,
+    borderRadius: 20,
     backgroundColor: colors.white_alpha,
     borderWidth: 0,
     borderColor: colors.white_alpha,
@@ -196,6 +196,7 @@ class Info extends React.Component {
                 text={texts.source}
                 subtitle={texts.pdfLinkText}
                 isBig={false}
+                hasBg={true}
                 onPress={() => this.openURL(texts.pdfLink)}
               />
               <Text></Text>
diff --git a/vds-app/App/screens/Quiz.js b/vds-app/App/screens/Quiz.js
index 6ba17cc..b56e89c 100644
--- a/vds-app/App/screens/Quiz.js
+++ b/vds-app/App/screens/Quiz.js
@@ -17,7 +17,16 @@ const styles = StyleSheet.create({
     fontSize: 20,
     textAlign: "center",
     fontWeight: "600",
-    paddingVertical: 20
+    paddingTop: 5,
+    paddingBottom: 20
+  },
+  textCode: {
+    color: colors.white,
+    fontSize: 12,
+    textAlign: "center",
+    fontWeight: "500",
+    paddingTop: 20,
+    paddingBottom: 0
   },
   safearea: {
     flex: 1,
@@ -100,7 +109,7 @@ class Quiz extends React.Component {
           nextState.answerCorrect = false,
           nextState.wrongAnswers = state.wrongAnswers
           nextState.wrongAnswers.push(
-            { text: question.question,
+            { question: question.question,
               id: question.id,
               clicked: id,
               answers: question.answers
@@ -126,6 +135,7 @@ class Quiz extends React.Component {
       this.props.navigation.navigate("Results", {
         results: {
           isExam: false,
+          isWrong: this.props.navigation.getParam("isWrong"),
           total: this.state.totalCount,
           correct: this.state.correctCount,
           wrong: this.state.wrongCount,
@@ -159,6 +169,7 @@ class Quiz extends React.Component {
               {!this.state.results ?
               <SafeAreaView style={styles.safearea}>
                 <View>
+                  <Text style={styles.textCode}>{question.id}</Text>
                   <Text style={styles.text}>{question.question}</Text>
 
                   <ButtonContainer>
diff --git a/vds-app/App/screens/QuizIndex.js b/vds-app/App/screens/QuizIndex.js
index 0ad600c..55c9a76 100644
--- a/vds-app/App/screens/QuizIndex.js
+++ b/vds-app/App/screens/QuizIndex.js
@@ -1,5 +1,5 @@
 import React from "react"
-import { View, ScrollView, StatusBar, BackHandler, StyleSheet, Dimensions, ImageBackground } from "react-native"
+import { View, ScrollView, StatusBar, BackHandler, StyleSheet, Dimensions, ImageBackground, AsyncStorage } from "react-native"
 
 import aerodynamicsQuestions from "../data/aerodynamics"
 import firstAidQuestions from "../data/firstAid"
@@ -39,8 +39,20 @@ const styles = StyleSheet.create({
 
 class QuizIndex extends React.Component {
 
+  state = {
+    storeWrongAnswers: []
+  }
+
   componentDidMount() {
     BackHandler.addEventListener('hardwareBackPress', this.handleBackButton)
+    AsyncStorage.getItem('storeWrongAnswers').then((value) => {
+      //console.log('storeWrongAnswers: ', JSON.parse(value))
+      this.setState( (state) => {
+        return {
+          storeWrongAnswers: JSON.parse(value)
+        }
+      })
+    }).done()
   }
 
   componentWillUnmount() {
@@ -57,6 +69,15 @@ class QuizIndex extends React.Component {
       <ImageBackground source={bgImage} style={styles.bg} resizeMode="cover">
         <ScrollView >
           <View style={{marginVertical: 60}}>
+
+
+    <RowItem name="TEST" textColor={colors.white} onPress={()=>
+      this.props.navigation.navigate("Quiz", {
+        title: "TEST",
+        questions: testQuestions,
+        color: colors.blue
+      })}/>
+
             <RowItem name={texts.aerodynamics} subtitle={aerodynamicsQuestions.length} textColor={colors.white} onPress={()=>
               this.props.navigation.navigate("Quiz", {
                 title: texts.aerodynamics,
diff --git a/vds-app/App/screens/Recap.js b/vds-app/App/screens/Recap.js
index 82019b9..64dd9ef 100644
--- a/vds-app/App/screens/Recap.js
+++ b/vds-app/App/screens/Recap.js
@@ -1,5 +1,5 @@
 import React from "react"
-import { View, ScrollView, StyleSheet, StatusBar, Text, SafeAreaView, Dimensions, Image, ImageBackground, BackHandler} from "react-native"
+import { View, ScrollView, StyleSheet, StatusBar, Text, SafeAreaView, Dimensions, Image, ImageBackground, BackHandler, AsyncStorage} from "react-native"
 import { AdMobBanner } from "expo-ads-admob"
 
 import { Button, ButtonContainer } from "../components/Button"
@@ -66,7 +66,15 @@ const styles = StyleSheet.create({
     fontSize: 20,
     textAlign: "center",
     fontWeight: "600",
-    paddingTop: 10
+    paddingTop: 0
+  },
+  textCode: {
+    color: colors.white,
+    fontSize: 12,
+    textAlign: "center",
+    fontWeight: "500",
+    paddingTop: 10,
+    paddingBottom: 0
   },
   textBig: {
     color: colors.white,
@@ -97,8 +105,20 @@ const styles = StyleSheet.create({
 
 class Recap extends React.Component {
 
+  state = {
+    storeWrongAnswers: []
+  }
+
   componentDidMount() {
     BackHandler.addEventListener('hardwareBackPress', this.handleBackButton)
+    AsyncStorage.getItem('storeWrongAnswers').then((value) => {
+      //console.log('storeWrongAnswers: ', JSON.parse(value))
+      this.setState( (state) => {
+        return {
+          storeWrongAnswers: JSON.parse(value)
+        }
+      })
+    }).done()
   }
 
   componentWillUnmount() {
@@ -117,10 +137,9 @@ class Recap extends React.Component {
       }
     })
 
-    //tmpQuestions.forEach( (e) => { console.log(e.id) })
-
     this.props.navigation.navigate("Splash", {
-      examQuestions: tmpQuestions
+      examQuestions: tmpQuestions,
+      storeWrongAnswers: this.state.storeWrongAnswers
     })
     return true
   }
@@ -141,7 +160,8 @@ class Recap extends React.Component {
           <SafeAreaView style={styles.safearea}>
             {questions.map( (question, index) => (
               <View style={styles.box} key={question.id}>
-                <Text style={styles.text}>{question.text}</Text>
+                <Text style={styles.textCode}>{question.id}</Text>
+                <Text style={styles.text}>{question.question}</Text>
 
                 <ButtonContainer>
                   {question.answers.map( (answer, index) => (
diff --git a/vds-app/App/screens/RecapTrueFalse.js b/vds-app/App/screens/RecapTrueFalse.js
index 9fbd61b..5b7b720 100644
--- a/vds-app/App/screens/RecapTrueFalse.js
+++ b/vds-app/App/screens/RecapTrueFalse.js
@@ -1,5 +1,5 @@
 import React from "react"
-import { View, ScrollView, StyleSheet, StatusBar, Text, SafeAreaView, Dimensions, Image, ImageBackground, BackHandler} from "react-native"
+import { View, ScrollView, StyleSheet, StatusBar, Text, SafeAreaView, Dimensions, Image, ImageBackground, BackHandler, AsyncStorage} from "react-native"
 import { AdMobBanner } from "expo-ads-admob"
 
 import { Button, ButtonContainer } from "../components/Button"
@@ -66,7 +66,15 @@ const styles = StyleSheet.create({
     fontSize: 20,
     textAlign: "center",
     fontWeight: "600",
-    paddingTop: 10
+    paddingTop: 0
+  },
+  textCode: {
+    color: colors.white,
+    fontSize: 12,
+    textAlign: "center",
+    fontWeight: "500",
+    paddingTop: 10,
+    paddingBottom: 0
   },
   textBig: {
     color: colors.white,
@@ -99,6 +107,9 @@ class RecapTrueFalse extends React.Component {
 
   componentDidMount() {
     BackHandler.addEventListener('hardwareBackPress', this.handleBackButton)
+    AsyncStorage.getItem('storeWrongAnswers').then((value) => {
+      console.log(value)
+    }).done()
   }
 
   componentWillUnmount() {
@@ -145,7 +156,8 @@ class RecapTrueFalse extends React.Component {
           <SafeAreaView style={styles.safearea}>
             {questions.map( (question, index) => (
               <View style={styles.box} key={question.id}>
-                <Text style={styles.text}>{question.text}</Text>
+                <Text style={styles.textCode}>{question.id}</Text>
+                <Text style={styles.text}>{question.question}</Text>
 
                 <ButtonContainer>
                   {question.answers.map( (answer, index) => {
diff --git a/vds-app/App/screens/Results.js b/vds-app/App/screens/Results.js
index 2a47526..51f9f23 100644
--- a/vds-app/App/screens/Results.js
+++ b/vds-app/App/screens/Results.js
@@ -1,5 +1,5 @@
 import React from "react"
-import { View, ScrollView, StyleSheet, StatusBar, Text, SafeAreaView, Dimensions, Image, BackHandler} from "react-native"
+import { View, ScrollView, StyleSheet, StatusBar, Text, SafeAreaView, Dimensions, Image, BackHandler, AsyncStorage} from "react-native"
 
 import { Button, ButtonContainer } from "../components/Button"
 import { colors, texts, examScheme } from "../components/Variables"
@@ -119,11 +119,27 @@ class Results extends React.Component {
 
   state = {
     bannerExpanded: true,
-    timer: maxTime
+    timer: maxTime,
+    storeWrongAnswers: []
   }
 
   componentDidMount() {
     BackHandler.addEventListener('hardwareBackPress', this.handleBackButton)
+
+    AsyncStorage.getItem('storeWrongAnswers').then( (value) => {
+      const currentResults = this.props.navigation.getParam("results")
+      const wrongAnswers = currentResults.wrongAnswers || []
+      const stored = JSON.parse(value) || []
+      const result = currentResults.isWrong ? wrongAnswers : Object.assign([], wrongAnswers, stored);
+      AsyncStorage.setItem('storeWrongAnswers', JSON.stringify(result))
+
+      this.setState( (state) => {
+        return {
+          storeWrongAnswers: result
+        }
+      })
+
+    }).done()
   }
 
   componentWillUnmount() {
@@ -142,14 +158,14 @@ class Results extends React.Component {
       }
     })
 
-    //tmpQuestions.forEach( (e) => { console.log(e.id) })
-
     this.props.navigation.navigate("Splash", {
-      examQuestions: tmpQuestions
+      examQuestions: tmpQuestions,
+      storeWrongAnswers: this.state.storeWrongAnswers
     })
     return true
   }
 
+
   render() {
 
     const currentResults = this.props.navigation.getParam("results")
@@ -163,7 +179,6 @@ class Results extends React.Component {
       boxStyle = percentage >= 80 ? percentage >= 85 ? styles.boxCorrect : styles.boxUnsafe : styles.boxWrong
     }
 
-    //console.log(currentResults)
 
     return (
       <View style={styles.container} >
@@ -182,9 +197,13 @@ class Results extends React.Component {
               <Text style={styles.text}>
                 <Text style={styles.textLabel}>{`${texts.percentage}: ${Math.round(percentage)}%`}</Text>
               </Text>
-              <Text style={styles.text}>
-                <Text style={styles.textLabel}>{`${texts.points}: ${currentResults.points}/${currentResults.totalPoints}`}</Text>
-              </Text>
+              {
+                currentResults.points ? (
+                  <Text style={styles.text}>
+                    <Text style={styles.textLabel}>{`${texts.points}: ${currentResults.points}/${currentResults.totalPoints}`}</Text>
+                  </Text>
+                ) : null
+              }
 
               {currentResults.isExam ?
                 <Text style={[styles.textSmall, resultStyle]}>
diff --git a/vds-app/App/screens/Splash.js b/vds-app/App/screens/Splash.js
index 836c2d4..c4187dd 100644
--- a/vds-app/App/screens/Splash.js
+++ b/vds-app/App/screens/Splash.js
@@ -1,5 +1,5 @@
 import React from "react"
-import { View, ScrollView, StyleSheet, StatusBar, Text, SafeAreaView, Dimensions, Image, Alert, BackHandler } from "react-native"
+import { View, ScrollView, StyleSheet, StatusBar, Text, SafeAreaView, Dimensions, Image, Alert, BackHandler, AsyncStorage } from "react-native"
 import { AdMobBanner } from "expo-ads-admob"
 
 import { Button, ButtonContainer } from "../components/Button"
@@ -81,7 +81,8 @@ class Splash extends React.Component {
 
   state = {
     bannerExpanded: true,
-    timer: maxTime
+    timer: maxTime,
+    storeWrongAnswers: this.props.navigation.getParam("storeWrongAnswers", []) || []
   }
 
   bannerError = (e) => {
@@ -90,6 +91,17 @@ class Splash extends React.Component {
 
   componentDidMount() {
     BackHandler.addEventListener('hardwareBackPress', this.handleBackButton)
+    AsyncStorage.getItem('storeWrongAnswers').then( (value) => {
+      if(!value) {
+        AsyncStorage.setItem('storeWrongAnswers', JSON.stringify([]))
+      }
+
+      this.setState( (state) => {
+        return {
+          storeWrongAnswers: value ? JSON.parse(value) : []
+        }
+      })
+    }).done()
   }
 
   componentWillUnmount() {
@@ -111,6 +123,10 @@ class Splash extends React.Component {
 
   render() {
 
+    const storeWrongAnswers = this.props.navigation.getParam("storeWrongAnswers") || this.state.storeWrongAnswers
+
+    //console.log(storeWrongAnswers.length)
+
     if(this.state.timer==maxTime) {
       interval = setInterval( () => {
         this.setState( (state) => {
@@ -145,6 +161,7 @@ class Splash extends React.Component {
                 text={texts.section_quizzes}
                 subtitle={`(${texts.section_quizzes_subtitle})`}
                 isBig={false}
+                hasBg={true}
                 noPadding={true}
                 hasShadow={true}
                 color={colors.white_alpha}
@@ -154,10 +171,33 @@ class Splash extends React.Component {
                     color: colors.white_alpha
                   })}
               />
+
+              {
+                storeWrongAnswers.length ? (
+                  <Button
+                    text={texts.wrong_review}
+                    subtitle={`(${storeWrongAnswers.length})`}
+                    isBig={false}
+                    hasBg={true}
+                    noPadding={true}
+                    hasShadow={true}
+                    color={colors.white_alpha}
+                    onPress={() =>
+                      this.props.navigation.navigate("Quiz", {
+                        title: texts.wrong_review,
+                        questions: storeWrongAnswers,
+                        isWrong: true,
+                        color: colors.blue
+                      })}
+                  />
+                ) : null
+              }
+
               <Button
                 text={texts.exam}
                 subtitle={`(${texts.exam_simulation})`}
                 isBig={false}
+                hasBg={true}
                 noPadding={true}
                 hasShadow={true}
                 color={colors.white_alpha}
@@ -173,6 +213,7 @@ class Splash extends React.Component {
                 text={texts.trueFalse}
                 subtitle={`(${texts.trueFalseSubtitle})`}
                 isBig={false}
+                hasBg={true}
                 noPadding={true}
                 hasShadow={true}
                 color={colors.white_alpha}
@@ -187,6 +228,7 @@ class Splash extends React.Component {
                 text={texts.dictionaryTitle}
                 subtitle={`(${texts.dictionarySubtitle})`}
                 isBig={false}
+                hasBg={true}
                 noPadding={true}
                 hasShadow={true}
                 color={colors.white_alpha}
@@ -195,6 +237,7 @@ class Splash extends React.Component {
               <Button
                 text={texts.infoTitle}
                 isBig={false}
+                hasBg={true}
                 noPadding={true}
                 hasShadow={true}
                 color={colors.white_alpha}
@@ -203,6 +246,7 @@ class Splash extends React.Component {
               <Button
                 text={texts.exit}
                 isBig={false}
+                hasBg={true}
                 noPadding={true}
                 hasShadow={true}
                 noBorder={true}
diff --git a/vds-app/App/screens/TrueFalse.js b/vds-app/App/screens/TrueFalse.js
index 62805b2..1a557e4 100644
--- a/vds-app/App/screens/TrueFalse.js
+++ b/vds-app/App/screens/TrueFalse.js
@@ -39,7 +39,16 @@ const styles = StyleSheet.create({
     fontSize: 20,
     textAlign: "center",
     fontWeight: "600",
-    paddingVertical: 20
+    paddingTop: 5,
+    paddingBottom: 20
+  },
+  textCode: {
+    color: colors.white,
+    fontSize: 12,
+    textAlign: "center",
+    fontWeight: "500",
+    paddingTop: 20,
+    paddingBottom: 0
   },
   textAnswer: {
     color: colors.black,
@@ -151,7 +160,7 @@ class Quiz extends React.Component {
           nextState.wrongCount = state.wrongCount + 1
           nextState.wrongAnswers = state.wrongAnswers
           nextState.wrongAnswers.push(
-            { text: question.question,
+            { question: question.question,
               id: question.id,
               clicked: question.answers[state.activeAnswerId].id,
               answers: question.answers
@@ -215,6 +224,7 @@ class Quiz extends React.Component {
               {!this.state.results ?
               <SafeAreaView style={styles.safearea}>
                 <View>
+                  <Text style={styles.textCode}>{question.id}</Text>
                   <Text style={styles.text}>{question.question}</Text>
                   <Text style={styles.textAnswer}>{randomAnswer.text}</Text>
 
diff --git a/vds-app/app.json b/vds-app/app.json
index cffff2a..d1b5ceb 100644
--- a/vds-app/app.json
+++ b/vds-app/app.json
@@ -8,7 +8,7 @@
       "ios",
       "android"
     ],
-    "version": "2.1.3",
+    "version": "3.1.1",
     "orientation": "portrait",
     "icon": "./assets/icon.png",
     "splash": {
diff --git a/vds-app/package.json b/vds-app/package.json
index 8a5a111..5d2e7b7 100644
--- a/vds-app/package.json
+++ b/vds-app/package.json
@@ -4,6 +4,7 @@
     "start": "expo start",
     "android": "expo start --android",
     "build-android": "expo build:android -t app-bundle",
+    "build-ios": "expo build:ios",
     "ios": "expo start --ios",
     "eject": "expo eject",
     "lint": "eslint ."