diff --git a/composeApp/src/androidMain/kotlin/com/derakkuma/ui/BackHandler.kt b/composeApp/src/androidMain/kotlin/com/derakkuma/ui/BackHandler.kt
new file mode 100644
index 0000000..ae2cc7a
--- /dev/null
+++ b/composeApp/src/androidMain/kotlin/com/derakkuma/ui/BackHandler.kt
@@ -0,0 +1,9 @@
+package com.derakkuma.ui
+
+import androidx.activity.compose.BackHandler as AndroidBackHandler
+import androidx.compose.runtime.Composable
+
+@Composable
+actual fun BackHandler(enabled: Boolean, onBack: () -> Unit) {
+    AndroidBackHandler(enabled = enabled, onBack = onBack)
+}
diff --git a/composeApp/src/commonMain/kotlin/com/derakkuma/App.kt b/composeApp/src/commonMain/kotlin/com/derakkuma/App.kt
index 9d1e21c..db5a504 100644
--- a/composeApp/src/commonMain/kotlin/com/derakkuma/App.kt
+++ b/composeApp/src/commonMain/kotlin/com/derakkuma/App.kt
@@ -1,6 +1,6 @@
 package com.derakkuma
 
-import androidx.activity.compose.BackHandler
+import com.derakkuma.ui.BackHandler
 import androidx.compose.animation.core.LinearEasing
 import androidx.compose.animation.core.animateFloat
 import androidx.compose.animation.core.infiniteRepeatable
diff --git a/composeApp/src/commonMain/kotlin/com/derakkuma/ui/BackHandler.kt b/composeApp/src/commonMain/kotlin/com/derakkuma/ui/BackHandler.kt
new file mode 100644
index 0000000..397f622
--- /dev/null
+++ b/composeApp/src/commonMain/kotlin/com/derakkuma/ui/BackHandler.kt
@@ -0,0 +1,6 @@
+package com.derakkuma.ui
+
+import androidx.compose.runtime.Composable
+
+@Composable
+expect fun BackHandler(enabled: Boolean = true, onBack: () -> Unit)
diff --git a/composeApp/src/commonMain/kotlin/com/derakkuma/ui/tabs/CollectionTab.kt b/composeApp/src/commonMain/kotlin/com/derakkuma/ui/tabs/CollectionTab.kt
index 346cbb2..a2892f2 100644
--- a/composeApp/src/commonMain/kotlin/com/derakkuma/ui/tabs/CollectionTab.kt
+++ b/composeApp/src/commonMain/kotlin/com/derakkuma/ui/tabs/CollectionTab.kt
@@ -1,6 +1,6 @@
 package com.derakkuma.ui.tabs
 
-import androidx.activity.compose.BackHandler
+import com.derakkuma.ui.BackHandler
 import androidx.compose.foundation.layout.*
 import androidx.compose.foundation.lazy.LazyColumn
 import androidx.compose.foundation.lazy.LazyRow
diff --git a/composeApp/src/iosMain/kotlin/com/derakkuma/ui/BackHandler.kt b/composeApp/src/iosMain/kotlin/com/derakkuma/ui/BackHandler.kt
new file mode 100644
index 0000000..23c5e17
--- /dev/null
+++ b/composeApp/src/iosMain/kotlin/com/derakkuma/ui/BackHandler.kt
@@ -0,0 +1,8 @@
+package com.derakkuma.ui
+
+import androidx.compose.runtime.Composable
+
+@Composable
+actual fun BackHandler(enabled: Boolean, onBack: () -> Unit) {
+    // No-op: iOS back navigation is handled by the nav controller swipe gesture.
+}