diff --git a/.gitignore b/.gitignore
index af2da2e1..0e50999d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -7,11 +7,11 @@
 /.idea/libraries
 /.idea/modules.xml
 /.idea/workspace.xml
-/.idea/navEditor.xml
+/.idea/navEditor.xmlc
 /.idea/assetWizardSettings.xml
 .DS_Store
 /build
 /captures
 .externalNativeBuild
 .cxx
-local.properties
+local.properties
\ No newline at end of file
diff --git a/app/build.gradle.kts b/app/build.gradle.kts
index f194d806..00d010f7 100644
--- a/app/build.gradle.kts
+++ b/app/build.gradle.kts
@@ -26,7 +26,7 @@ android {
         try {
             file(rootProject.file("local.properties")).inputStream()
                 .use { localProperties.load(it) }
-        } catch (e: Exception) {
+        } catch (_: Exception) {
             println("local.properties not found, using default values")
         }
 
diff --git a/app/src/main/java/com/pwhs/quickmem/presentation/app/deeplink/classes/JoinClassScreen.kt b/app/src/main/java/com/pwhs/quickmem/presentation/app/deeplink/classes/JoinClassScreen.kt
index 81c30d55..538213fa 100644
--- a/app/src/main/java/com/pwhs/quickmem/presentation/app/deeplink/classes/JoinClassScreen.kt
+++ b/app/src/main/java/com/pwhs/quickmem/presentation/app/deeplink/classes/JoinClassScreen.kt
@@ -23,9 +23,6 @@ import androidx.compose.runtime.Composable
 import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.runtime.collectAsState
 import androidx.compose.runtime.getValue
-import androidx.compose.runtime.mutableStateOf
-import androidx.compose.runtime.remember
-import androidx.compose.runtime.setValue
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.draw.clip
@@ -35,25 +32,19 @@ import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.unit.dp
 import androidx.hilt.navigation.compose.hiltViewModel
 import coil.compose.AsyncImage
+import com.pwhs.quickmem.R
 import com.pwhs.quickmem.domain.model.classes.GetClassDetailResponseModel
 import com.pwhs.quickmem.presentation.ads.BannerAds
 import com.pwhs.quickmem.presentation.app.settings.component.SettingCard
 import com.pwhs.quickmem.presentation.app.settings.component.SettingItem
 import com.pwhs.quickmem.presentation.app.settings.component.SettingTitleSection
 import com.pwhs.quickmem.presentation.component.LoadingOverlay
-import com.pwhs.quickmem.util.ads.AdsUtil.interstitialAds
 import com.ramcosta.composedestinations.annotation.Destination
 import com.ramcosta.composedestinations.annotation.RootGraph
 import com.ramcosta.composedestinations.generated.NavGraphs
 import com.ramcosta.composedestinations.generated.destinations.ClassDetailScreenDestination
 import com.ramcosta.composedestinations.generated.destinations.UserDetailScreenDestination
 import com.ramcosta.composedestinations.navigation.DestinationsNavigator
-import com.revenuecat.purchases.CustomerInfo
-import com.revenuecat.purchases.Purchases
-import com.revenuecat.purchases.PurchasesError
-import com.revenuecat.purchases.interfaces.ReceiveCustomerInfoCallback
-import timber.log.Timber
-import com.pwhs.quickmem.R
 
 @Destination<RootGraph>(
     navArgs = JoinClassArgs::class
@@ -92,8 +83,10 @@ fun JoinClassScreen(
                 }
 
                 JoinClassUiEvent.UnAuthorized -> {
-                    Toast.makeText(context,
-                        context.getString(R.string.txt_unauthorized), Toast.LENGTH_SHORT).show()
+                    Toast.makeText(
+                        context,
+                        context.getString(R.string.txt_unauthorized), Toast.LENGTH_SHORT
+                    ).show()
                     navigator.navigate(NavGraphs.root) {
                         popUpTo(NavGraphs.root) {
                             saveState = false
@@ -104,8 +97,10 @@ fun JoinClassScreen(
                 }
 
                 JoinClassUiEvent.NotFound -> {
-                    Toast.makeText(context,
-                        context.getString(R.string.txt_class_not_found), Toast.LENGTH_SHORT).show()
+                    Toast.makeText(
+                        context,
+                        context.getString(R.string.txt_class_not_found), Toast.LENGTH_SHORT
+                    ).show()
                     navigator.navigate(NavGraphs.root) {
                         popUpTo(NavGraphs.root) {
                             saveState = false
@@ -152,21 +147,6 @@ fun JoinClass(
     onBackHome: () -> Unit = {},
     onOwnerClick: () -> Unit = {}
 ) {
-    var customer: CustomerInfo? by remember { mutableStateOf(null) }
-    val context = LocalContext.current
-    LaunchedEffect(key1 = true) {
-        Purchases.sharedInstance.getCustomerInfo(object : ReceiveCustomerInfoCallback {
-            override fun onError(error: PurchasesError) {
-                Timber.e("Error getting customer info: $error")
-            }
-
-            override fun onReceived(customerInfo: CustomerInfo) {
-                Timber.d("Customer info: $customerInfo")
-                customer = customerInfo
-            }
-
-        })
-    }
     Scaffold(
         topBar = {
             CenterAlignedTopAppBar(
@@ -199,7 +179,7 @@ fun JoinClass(
                             modifier = Modifier.padding(16.dp)
                         ) {
                             SettingItem(
-                                title = "Name",
+                                title = stringResource(R.string.txt_title),
                                 subtitle = classDetailResponseModel?.title ?: "",
                                 showArrow = false
                             )
@@ -244,12 +224,7 @@ fun JoinClass(
 
                 item {
                     Button(
-                        onClick = {
-                            val isSubscribed = customer?.activeSubscriptions?.isNotEmpty() == true
-                            interstitialAds(context, isSubscribed) {
-                                onJoinClass()
-                            }
-                        },
+                        onClick = onJoinClass,
                         modifier = Modifier.padding(16.dp)
                     ) {
                         Text(text = stringResource(R.string.txt_join_class))
diff --git a/app/src/main/java/com/pwhs/quickmem/presentation/app/explore/ExploreScreen.kt b/app/src/main/java/com/pwhs/quickmem/presentation/app/explore/ExploreScreen.kt
index b8d48a25..1157c104 100644
--- a/app/src/main/java/com/pwhs/quickmem/presentation/app/explore/ExploreScreen.kt
+++ b/app/src/main/java/com/pwhs/quickmem/presentation/app/explore/ExploreScreen.kt
@@ -31,6 +31,7 @@ import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.runtime.collectAsState
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.mutableIntStateOf
+import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.saveable.rememberSaveable
 import androidx.compose.runtime.setValue
 import androidx.compose.ui.Alignment
@@ -56,7 +57,6 @@ import com.ramcosta.composedestinations.annotation.Destination
 import com.ramcosta.composedestinations.annotation.RootGraph
 import com.ramcosta.composedestinations.generated.destinations.StudySetDetailScreenDestination
 import com.ramcosta.composedestinations.generated.destinations.UserDetailScreenDestination
-import com.ramcosta.composedestinations.generated.destinations.UserDetailScreenDestination.invoke
 import com.ramcosta.composedestinations.navigation.DestinationsNavigator
 import com.revenuecat.purchases.CustomerInfo
 
@@ -87,6 +87,7 @@ fun ExploreScreen(
                         Toast.LENGTH_SHORT
                     ).show()
                 }
+
                 is ExploreUiEvent.Error -> {
                     Toast.makeText(
                         context,
@@ -164,7 +165,7 @@ fun Explore(
     onDifficultyLevelChange: (DifficultyLevel) -> Unit = {},
     onCreateStudySet: () -> Unit = {},
     onEarnCoins: () -> Unit = {},
-   @StringRes errorMessage: Int? = null,
+    @StringRes errorMessage: Int? = null,
     coins: Int = 0,
     customerInfo: CustomerInfo? = null,
 ) {
@@ -174,7 +175,7 @@ fun Explore(
         stringResource(R.string.txt_top_streak),
     )
     val context = LocalContext.current
-
+    var isGettingAds by rememberSaveable { mutableStateOf(false) }
 
     Scaffold(
         modifier = modifier,
@@ -195,7 +196,7 @@ fun Explore(
                         ) {
                             Icon(
                                 imageVector = Icons.Default.Refresh,
-                                contentDescription = "Refresh",
+                                contentDescription = stringResource(R.string.txt_refresh),
                             )
                         }
                     } else {
@@ -216,22 +217,25 @@ fun Explore(
                             )
                             Image(
                                 painter = painterResource(id = R.drawable.ic_coin),
-                                contentDescription = "Coins",
+                                contentDescription = stringResource(R.string.txt_coin),
                                 modifier = Modifier.size(24.dp),
                                 contentScale = ContentScale.Crop
                             )
                             if (customerInfo?.activeSubscriptions?.isNotEmpty() == false) {
                                 Icon(
                                     imageVector = Icons.Default.Add,
-                                    contentDescription = "Add",
+                                    contentDescription = stringResource(R.string.txt_add),
                                     tint = colorScheme.primary,
                                     modifier = Modifier
                                         .size(24.dp)
                                         .clickable {
+                                            isGettingAds = true
                                             AdsUtil.rewardedInterstitialAd(
                                                 context,
-                                                onEarnCoins
-                                            )
+                                            ) {
+                                                onEarnCoins()
+                                                isGettingAds = false
+                                            }
                                         },
                                 )
                             }
@@ -312,7 +316,7 @@ fun Explore(
                     )
                 }
             }
-            LoadingOverlay(isLoading = isLoading)
+            LoadingOverlay(isLoading = isLoading || isGettingAds)
         }
     }
 }
diff --git a/app/src/main/java/com/pwhs/quickmem/presentation/app/explore/ExploreViewModel.kt b/app/src/main/java/com/pwhs/quickmem/presentation/app/explore/ExploreViewModel.kt
index 9d80a027..01b7cc97 100644
--- a/app/src/main/java/com/pwhs/quickmem/presentation/app/explore/ExploreViewModel.kt
+++ b/app/src/main/java/com/pwhs/quickmem/presentation/app/explore/ExploreViewModel.kt
@@ -180,7 +180,14 @@ class ExploreViewModel @Inject constructor(
                             )
                         }
                         if (_uiState.value.customerInfo?.activeSubscriptions?.isNotEmpty() == false) {
-                            updateCoins(coinAction = CoinAction.SUBTRACT)
+                            updateCoins(
+                                coinAction = CoinAction.SUBTRACT,
+                                coin = when (uiState.value.numberOfFlashcards) {
+                                    in 1..10 -> 1
+                                    in 11..20 -> 2
+                                    else -> 3
+                                }
+                            )
                         }
                         _uiEvent.send(
                             ExploreUiEvent.CreatedStudySet(
diff --git a/app/src/main/java/com/pwhs/quickmem/presentation/app/explore/create_study_set_ai/CreateStudySetAITab.kt b/app/src/main/java/com/pwhs/quickmem/presentation/app/explore/create_study_set_ai/CreateStudySetAITab.kt
index 905e20b5..801abd1a 100644
--- a/app/src/main/java/com/pwhs/quickmem/presentation/app/explore/create_study_set_ai/CreateStudySetAITab.kt
+++ b/app/src/main/java/com/pwhs/quickmem/presentation/app/explore/create_study_set_ai/CreateStudySetAITab.kt
@@ -102,11 +102,26 @@ fun CreateStudySetAITab(
                     ) {
                         Icon(
                             painter = painterResource(R.drawable.ic_sparkling),
-                            contentDescription = stringResource(R.string.txt_create_study_set_with_ai_minus_one),
+                            contentDescription = "Create",
                         )
                         Text(
                             text = when (isPlus) {
-                                false -> stringResource(R.string.txt_create_study_set_with_ai_minus_one)
+                                false -> when (numberOfFlashcards) {
+                                    in 1..10 -> stringResource(
+                                        R.string.txt_create_study_set_ai_now,
+                                        1
+                                    )
+
+                                    in 11..20 -> stringResource(
+                                        R.string.txt_create_study_set_ai_now,
+                                        2
+                                    )
+
+                                    else -> {
+                                        stringResource(R.string.txt_create_study_set_ai_now, 3)
+                                    }
+                                }
+
                                 else -> stringResource(
                                     R.string.txt_create_study_set_with_ai,
                                 )
diff --git a/app/src/main/java/com/pwhs/quickmem/presentation/app/study_set/detail/material/StudySetFlipCard.kt b/app/src/main/java/com/pwhs/quickmem/presentation/app/study_set/detail/material/StudySetFlipCard.kt
index e844334d..be6f567f 100644
--- a/app/src/main/java/com/pwhs/quickmem/presentation/app/study_set/detail/material/StudySetFlipCard.kt
+++ b/app/src/main/java/com/pwhs/quickmem/presentation/app/study_set/detail/material/StudySetFlipCard.kt
@@ -27,20 +27,26 @@ import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.graphics.graphicsLayer
 import androidx.compose.ui.layout.ContentScale
 import androidx.compose.ui.platform.LocalConfiguration
+import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.text.font.FontWeight
 import androidx.compose.ui.text.style.TextAlign
 import androidx.compose.ui.text.style.TextOverflow
+import androidx.compose.ui.unit.TextUnit
 import androidx.compose.ui.unit.dp
 import androidx.compose.ui.unit.sp
 import coil.compose.AsyncImage
+import coil.request.ImageRequest
+import com.pwhs.quickmem.R
 import com.pwhs.quickmem.presentation.component.ShowImageDialog
 
 @Composable
-fun calculateDynamicFontSize(text: String): androidx.compose.ui.unit.TextUnit {
+fun calculateDynamicFontSize(text: String): TextUnit {
     return when {
-        text.length <= 20 -> 24.sp
         text.length <= 50 -> 20.sp
-        else -> 16.sp
+        text.length <= 100 -> 18.sp
+        text.length <= 150 -> 16.sp
+        text.length <= 200 -> 14.sp
+        else -> 12.sp
     }
 }
 
@@ -136,6 +142,7 @@ fun StudySetFlipCard(
                         style = MaterialTheme.typography.bodyMedium.copy(
                             fontSize = frontTextSize,
                             color = colorScheme.onBackground,
+                            fontWeight = FontWeight.Normal,
                             textAlign = when {
                                 backImage != null -> TextAlign.Start
                                 else -> TextAlign.Center
@@ -149,7 +156,10 @@ fun StudySetFlipCard(
                 backImage?.let {
                     if (it.isNotEmpty()) {
                         AsyncImage(
-                            model = it,
+                            model = ImageRequest.Builder(LocalContext.current)
+                                .data(it)
+                                .error(R.drawable.ic_image_error)
+                                .build(),
                             contentDescription = null,
                             modifier = Modifier
                                 .width(100.dp)
diff --git a/app/src/main/java/com/pwhs/quickmem/presentation/app/study_set/detail/progress/ProgressTabScreen.kt b/app/src/main/java/com/pwhs/quickmem/presentation/app/study_set/detail/progress/ProgressTabScreen.kt
index 0a0766c9..2bce501f 100644
--- a/app/src/main/java/com/pwhs/quickmem/presentation/app/study_set/detail/progress/ProgressTabScreen.kt
+++ b/app/src/main/java/com/pwhs/quickmem/presentation/app/study_set/detail/progress/ProgressTabScreen.kt
@@ -2,6 +2,7 @@ package com.pwhs.quickmem.presentation.app.study_set.detail.progress
 
 import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Spacer
 import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.foundation.layout.fillMaxWidth
 import androidx.compose.foundation.layout.height
@@ -113,6 +114,9 @@ fun ProgressTabScreen(
                     )
                 }
             }
+            item {
+                Spacer(modifier = Modifier.padding(60.dp))
+            }
         }
     }
 }
diff --git a/app/src/main/res/values-vi/strings.xml b/app/src/main/res/values-vi/strings.xml
index 154e4001..d9b8f179 100644
--- a/app/src/main/res/values-vi/strings.xml
+++ b/app/src/main/res/values-vi/strings.xml
@@ -263,7 +263,6 @@
     <string name="txt_bronze_medal">Huy chương đồng</string>
     <string name="txt_top_10_highest_streak_leaderboard">Bảng xếp hạng 10 chuỗi thành tích cao nhất</string>
     <string name="txt_streak_leaderboard_motivation">Duy trì chuỗi để leo bảng xếp hạng!</string>
-    <string name="txt_create_study_set_with_ai_minus_one">Tạo (-1)</string>
     <string name="txt_warning_ai_not_gen">Cảnh báo: AI có thể không tạo thẻ học chính xác hoặc đầy đủ. Hãy kiểm tra lại nếu bạn thấy cần thiết.</string>
     <string name="txt_title_required">Tiêu đề (bắt buộc)</string>
     <string name="txt_description_optional">Mô tả (tùy chọn)</string>
@@ -616,4 +615,7 @@
     <string name="txt_please_login_again">Vui lòng đăng nhập lại!</string>
     <string name="txt_failed_to_mark_notification_as_read">Đánh dấu thông báo là đã đọc thất bại</string>
     <string name="txt_failed_to_load_notifications">Tải thông báo thất bại</string>
+    <string name="txt_refresh">Tải lại</string>
+    <string name="txt_coin">Xu</string>
+    <string name="txt_create_study_set_ai_now">Tạo (-%1$s)</string>
 </resources>
\ No newline at end of file
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index b7ceec2e..f998068d 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -265,7 +265,6 @@
     <string name="txt_bronze_medal">Bronze Medal</string>
     <string name="txt_top_10_highest_streak_leaderboard">Top 10 highest streak leaderboard</string>
     <string name="txt_streak_leaderboard_motivation">Keep up the streak to climb the leaderboard!</string>
-    <string name="txt_create_study_set_with_ai_minus_one">Create (-1)</string>
     <string name="txt_warning_ai_not_gen">Warning: AI may not generate accurate or complete flashcards. Please review if unsure.</string>
     <string name="txt_title_required">Title (required)</string>
     <string name="txt_description_optional">Description (optional)</string>
@@ -619,4 +618,7 @@
     <string name="txt_please_login_again">Please login again!</string>
     <string name="txt_failed_to_mark_notification_as_read">Failed to mark notification as read</string>
     <string name="txt_failed_to_load_notifications">Failed to load notifications</string>
+    <string name="txt_refresh">Refresh</string>
+    <string name="txt_coin">Coin</string>
+    <string name="txt_create_study_set_ai_now">Create (-%1$s)</string>
 </resources>
\ No newline at end of file
diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index c3335ba5..32c323ba 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -1,17 +1,7 @@
 [versions]
 # default versions
 compileSdk = "35"
-composeCharts = "0.0.18"
-credentials = "1.3.0"
-credentialsPlayServicesAuth = "1.3.0"
-googleid = "1.1.1"
 minSdk = "29"
-pagingRuntimeKtx = "3.3.4"
-pagingCompose = "3.3.4"
-playServicesAuth = "21.3.0"
-revenuecat = "8.10.1"
-roomRuntime = "2.6.1"
-roomCompiler = "2.6.1"
 targetSdk = "35"
 versionCode = "8"
 versionName = "1.6(1)"
@@ -24,7 +14,7 @@ easycrop = "0.1.1"
 easyvalidationCore = "1.0.4"
 firebaseBom = "33.7.0"
 firebaseMessagingKtx = "24.1.0"
-foundation = "1.7.5"
+foundation = "1.7.6"
 kotlin = "2.0.20"
 coreKtx = "1.15.0"
 junit = "4.13.2"
@@ -32,12 +22,22 @@ junitVersion = "1.2.1"
 espressoCore = "3.6.1"
 lifecycleRuntimeKtx = "2.8.7"
 activityCompose = "1.9.3"
-composeBom = "2024.11.00"
+composeBom = "2024.12.01"
 ksp = "2.0.20-1.0.25"
 lottieCompose = "6.4.2-SNAPSHOT"
-materialIconsExtended = "1.7.5"
+materialIconsExtended = "1.7.6"
+pagingRuntimeKtx = "3.3.5"
+pagingCompose = "3.3.5"
+playServicesAuth = "21.3.0"
+revenuecat = "8.10.1"
+roomRuntime = "2.6.1"
+roomCompiler = "2.6.1"
+composeCharts = "0.0.18"
+credentials = "1.3.0"
+credentialsPlayServicesAuth = "1.3.0"
+googleid = "1.1.1"
 # Serialization
-runtime = "1.7.5"
+runtime = "1.7.6"
 serialization = "2.0.20"
 serialization-json = "1.7.1"
 serialization-core = "1.7.1"
@@ -58,7 +58,7 @@ composeAnimations = "1.11.6"
 workRuntime = "2.10.0"
 accompanist = "0.34.0"
 jakewhartonTimber = "5.0.1"
-uiTextGoogleFonts = "1.7.5"
+uiTextGoogleFonts = "1.7.6"
 # Retrofit
 retrofit = "2.11.0"
 loggingInterceptor = "4.12.0"