diff --git a/app/build.gradle.kts b/app/build.gradle.kts
index d58b160..c37f8cb 100644
--- a/app/build.gradle.kts
+++ b/app/build.gradle.kts
@@ -61,6 +61,7 @@ dependencies {
     implementation(libs.androidx.ui.graphics)
     implementation(libs.androidx.ui.tooling.preview)
     implementation(libs.androidx.core.splashscreen)
+    implementation(libs.androidx.datastore.preferences)
     implementation(libs.androidx.material3)
     lintChecks(libs.slack.compose.lint)
     testImplementation(libs.junit)
diff --git a/app/src/main/java/us/kikin/android/gamingbacklog/data/manager/LocalUserManager.kt b/app/src/main/java/us/kikin/android/gamingbacklog/data/manager/LocalUserManager.kt
new file mode 100644
index 0000000..aff4bf1
--- /dev/null
+++ b/app/src/main/java/us/kikin/android/gamingbacklog/data/manager/LocalUserManager.kt
@@ -0,0 +1,37 @@
+package us.kikin.android.gamingbacklog.data.manager
+
+import android.content.Context
+import androidx.datastore.core.DataStore
+import androidx.datastore.preferences.core.Preferences
+import androidx.datastore.preferences.core.booleanPreferencesKey
+import androidx.datastore.preferences.core.edit
+import androidx.datastore.preferences.preferencesDataStore
+import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.flow.map
+import us.kikin.android.gamingbacklog.domain.manager.LocalUserManager
+import us.kikin.android.gamingbacklog.utils.Constants
+import us.kikin.android.gamingbacklog.utils.Constants.USER_SETTINGS
+
+
+class LocalUserManagerImpl(
+    private val context: Context
+) : LocalUserManager {
+
+    override suspend fun saveAppEntry() {
+        context.dataStore.edit { settings ->
+            settings[PreferencesKeys.APP_ENTRY] = true
+        }
+    }
+
+    override fun readAppEntry(): Flow<Boolean> {
+        return context.dataStore.data.map { settings ->
+            settings[PreferencesKeys.APP_ENTRY] ?: false
+        }
+    }
+}
+
+private val Context.dataStore: DataStore<Preferences> by preferencesDataStore(name = USER_SETTINGS)
+
+private object PreferencesKeys {
+    val APP_ENTRY = booleanPreferencesKey(name = Constants.APP_ENTRY)
+}
diff --git a/app/src/main/java/us/kikin/android/gamingbacklog/domain/manager/LocalUserManager.kt b/app/src/main/java/us/kikin/android/gamingbacklog/domain/manager/LocalUserManager.kt
new file mode 100644
index 0000000..7927b8f
--- /dev/null
+++ b/app/src/main/java/us/kikin/android/gamingbacklog/domain/manager/LocalUserManager.kt
@@ -0,0 +1,10 @@
+package us.kikin.android.gamingbacklog.domain.manager
+
+import kotlinx.coroutines.flow.Flow
+
+interface LocalUserManager {
+
+    suspend fun saveAppEntry()
+
+    fun readAppEntry(): Flow<Boolean>
+}
diff --git a/app/src/main/java/us/kikin/android/gamingbacklog/domain/usecase/ReadAppEntry.kt b/app/src/main/java/us/kikin/android/gamingbacklog/domain/usecase/ReadAppEntry.kt
new file mode 100644
index 0000000..5c48f2d
--- /dev/null
+++ b/app/src/main/java/us/kikin/android/gamingbacklog/domain/usecase/ReadAppEntry.kt
@@ -0,0 +1,12 @@
+package us.kikin.android.gamingbacklog.domain.usecase
+
+import kotlinx.coroutines.flow.Flow
+import us.kikin.android.gamingbacklog.domain.manager.LocalUserManager
+
+class ReadAppEntry(
+    private val localUserManager: LocalUserManager
+) {
+
+    suspend operator fun invoke(): Flow<Boolean> =
+        localUserManager.readAppEntry()
+}
diff --git a/app/src/main/java/us/kikin/android/gamingbacklog/domain/usecase/SaveAppEntry.kt b/app/src/main/java/us/kikin/android/gamingbacklog/domain/usecase/SaveAppEntry.kt
new file mode 100644
index 0000000..7f37e59
--- /dev/null
+++ b/app/src/main/java/us/kikin/android/gamingbacklog/domain/usecase/SaveAppEntry.kt
@@ -0,0 +1,12 @@
+package us.kikin.android.gamingbacklog.domain.usecase
+
+import us.kikin.android.gamingbacklog.domain.manager.LocalUserManager
+
+class SaveAppEntry(
+    private val localUserManager: LocalUserManager
+) {
+
+    suspend operator fun invoke() {
+        localUserManager.saveAppEntry()
+    }
+}
diff --git a/app/src/main/java/us/kikin/android/gamingbacklog/presentation/common/PageIndicator.kt b/app/src/main/java/us/kikin/android/gamingbacklog/presentation/common/PageIndicator.kt
index ed17e18..247c876 100644
--- a/app/src/main/java/us/kikin/android/gamingbacklog/presentation/common/PageIndicator.kt
+++ b/app/src/main/java/us/kikin/android/gamingbacklog/presentation/common/PageIndicator.kt
@@ -11,7 +11,9 @@ import androidx.compose.runtime.Composable
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.draw.clip
 import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
+import us.kikin.android.gamingbacklog.ui.theme.AppTheme
 
 @Composable
 fun PageIndicator(
@@ -19,7 +21,7 @@ fun PageIndicator(
     selectedPage: Int,
     modifier: Modifier = Modifier,
     selectedColor: Color = MaterialTheme.colorScheme.primary,
-    unselectedColor: Color = Color.Blue
+    unselectedColor: Color =  MaterialTheme.colorScheme.secondary
 ) {
     Row(
         modifier = modifier,
@@ -37,3 +39,11 @@ fun PageIndicator(
         }
     }
 }
+
+@Composable
+@Preview(showBackground = true)
+internal fun PageIndicatorPreview() {
+    AppTheme {
+        PageIndicator(pageSize = 4, selectedPage = 2)
+    }
+}
diff --git a/app/src/main/java/us/kikin/android/gamingbacklog/utils/Constants.kt b/app/src/main/java/us/kikin/android/gamingbacklog/utils/Constants.kt
new file mode 100644
index 0000000..dff754f
--- /dev/null
+++ b/app/src/main/java/us/kikin/android/gamingbacklog/utils/Constants.kt
@@ -0,0 +1,6 @@
+package us.kikin.android.gamingbacklog.utils
+
+object Constants {
+    const val USER_SETTINGS: String = "user_settings"
+    const val APP_ENTRY: String = "app_entry"
+}
diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index c8c2f4c..fc963fb 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -27,6 +27,7 @@ androidx-material3 = { group = "androidx.compose.material3", name = "material3"
 slack-compose-lint = { group = "com.slack.lint.compose", name = "compose-lint-checks", version = "1.3.1" }
 androidx-ui-text-google-fonts = { group = "androidx.compose.ui", name = "ui-text-google-fonts", version = "1.6.7" }
 androidx-core-splashscreen = { group = "androidx.core", name = "core-splashscreen", version = "1.0.1" }
+androidx-datastore-preferences = { group = "androidx.datastore", name = "datastore-preferences", version = "1.1.1" }
 
 [plugins]
 android-application = { id = "com.android.application", version.ref = "agp" }