diff --git a/.gitignore b/.gitignore
index c964d580..7e7d26c2 100644
--- a/.gitignore
+++ b/.gitignore
@@ -15,5 +15,6 @@
 local.properties
 
 /app/build
+/app/release
 
-/buildSrc/build
+/buildSrc/build
\ No newline at end of file
diff --git a/app/proguard-rules.pro b/app/proguard-rules.pro
index 94d95a2b..c4a08775 100644
--- a/app/proguard-rules.pro
+++ b/app/proguard-rules.pro
@@ -23,4 +23,18 @@
 }
 
 # @Serializable and @Polymorphic are used at runtime for polymorphic serialization.
--keepattributes RuntimeVisibleAnnotations,AnnotationDefault
\ No newline at end of file
+-keepattributes RuntimeVisibleAnnotations,AnnotationDefault
+
+# Firebase
+-keep class com.firebase.** { *; }
+-keep class org.apache.** { *; }
+-keepnames class com.fasterxml.jackson.** { *; }
+-keepnames class javax.servlet.** { *; }
+-keepnames class org.ietf.jgss.** { *; }
+-dontwarn org.w3c.dom.**
+-dontwarn org.joda.time.**
+-dontwarn org.shaded.apache.**
+-dontwarn org.ietf.jgss.**
+
+# Only necessary if you downloaded the SDK jar directly instead of from maven.
+-keep class com.shaded.fasterxml.jackson.** { *; }
\ No newline at end of file
diff --git a/app/release/app-release.aab b/app/release/app-release.aab
deleted file mode 100644
index bec47151..00000000
Binary files a/app/release/app-release.aab and /dev/null differ
diff --git a/app/release/app-release.apk b/app/release/app-release.apk
deleted file mode 100644
index 470694ce..00000000
Binary files a/app/release/app-release.apk and /dev/null differ
diff --git a/core/src/main/res/values-pt/strings.xml b/core/src/main/res/values-pt/strings.xml
index 008f4330..618f34c4 100644
--- a/core/src/main/res/values-pt/strings.xml
+++ b/core/src/main/res/values-pt/strings.xml
@@ -79,4 +79,6 @@
     <string name="is_not_in_the_target_word_wordle">" não está na palavra."</string>
     <string name="is_in_the_word_but_in_the_wrong_spot_wordle">" está na palavra, mas no lugar errado."</string>
     <string name="is_in_the_word_and_in_the_correct_spot_wordle">" está na palavra e no lugar correto."</string>
+    <string name="results_screen">Tela de resultados</string>
+    <string name="n_correct_questions">$1%s perguntas corretas</string>
 </resources>
\ No newline at end of file
diff --git a/core/src/main/res/values/strings.xml b/core/src/main/res/values/strings.xml
index 96a24b87..e8f83198 100644
--- a/core/src/main/res/values/strings.xml
+++ b/core/src/main/res/values/strings.xml
@@ -79,4 +79,6 @@
     <string name="is_not_in_the_target_word_wordle">" is not in the target word."</string>
     <string name="is_in_the_word_but_in_the_wrong_spot_wordle">" is in the word but in the wrong spot."</string>
     <string name="is_in_the_word_and_in_the_correct_spot_wordle">" is in the word and in the correct spot."</string>
+    <string name="results_screen">Results screen</string>
+    <string name="n_correct_questions">$1%s correct questions</string>
 </resources>
\ No newline at end of file
diff --git a/multi-choice-quiz/src/main/java/com/infinitepower/newquiz/multi_choice_quiz/results/MultiChoiceQuizResultsScreen.kt b/multi-choice-quiz/src/main/java/com/infinitepower/newquiz/multi_choice_quiz/results/MultiChoiceQuizResultsScreen.kt
index 1e3b3b22..bdb2c6e8 100644
--- a/multi-choice-quiz/src/main/java/com/infinitepower/newquiz/multi_choice_quiz/results/MultiChoiceQuizResultsScreen.kt
+++ b/multi-choice-quiz/src/main/java/com/infinitepower/newquiz/multi_choice_quiz/results/MultiChoiceQuizResultsScreen.kt
@@ -9,6 +9,7 @@ import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.remember
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
+import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.unit.dp
 import com.airbnb.lottie.compose.LottieAnimation
 import com.airbnb.lottie.compose.LottieCompositionSpec
@@ -25,6 +26,7 @@ import com.infinitepower.newquiz.model.multi_choice_quiz.getBasicMultiChoiceQues
 import com.infinitepower.newquiz.multi_choice_quiz.components.CardQuestionAnswers
 import com.infinitepower.newquiz.multi_choice_quiz.components.QuizStepViewRow
 import com.infinitepower.newquiz.multi_choice_quiz.destinations.MultiChoiceQuizScreenDestination
+import com.infinitepower.newquiz.core.R as CoreR
 import com.ramcosta.composedestinations.annotation.Destination
 import com.ramcosta.composedestinations.navigation.DestinationsNavigator
 import kotlinx.serialization.decodeFromString
@@ -67,7 +69,7 @@ private fun MultiChoiceQuizResultsScreenImpl(
         topBar = {
             SmallTopAppBar(
                 title = {
-                    Text(text = "Results screen")
+                    Text(text = stringResource(id = CoreR.string.results_screen))
                 }
             )
         }
@@ -94,7 +96,7 @@ private fun MultiChoiceQuizResultsScreenImpl(
             }
             Spacer(modifier = Modifier.height(spaceLarge))
             Text(
-                text = "${questionSteps.countCorrectQuestions()}/${questionSteps.size} correct questions",
+                text = stringResource(id = CoreR.string.results_screen, "${questionSteps.countCorrectQuestions()}/${questionSteps.size}"),
                 style = MaterialTheme.typography.headlineMedium
             )
             Spacer(modifier = Modifier.height(spaceLarge))
@@ -116,13 +118,13 @@ private fun MultiChoiceQuizResultsScreenImpl(
                     onClick = onPlayAgainClick,
                     modifier = Modifier.weight(1f)
                 ) {
-                    Text(text = "Play again")
+                    Text(text = stringResource(id = CoreR.string.play_again))
                 }
                 Button(
                     onClick = onBackClick,
                     modifier = Modifier.weight(1f)
                 ) {
-                    Text(text = "Back")
+                    Text(text = stringResource(id = CoreR.string.back))
                 }
             }
         }
@@ -145,7 +147,7 @@ private fun MultiChoiceQuizResultsScreenImpl(
             },
             confirmButton = {
                 TextButton(onClick = { setQuestionDialog(null) }) {
-                    Text(text = "Close")
+                    Text(text = stringResource(id = CoreR.string.close))
                 }
             }
         )