diff --git a/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/domain/LocalModeStore.kt b/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/domain/LocalModeStore.kt
new file mode 100644
index 0000000..73efebb
--- /dev/null
+++ b/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/domain/LocalModeStore.kt
@@ -0,0 +1,27 @@
+package com.vaultdrop.mobile.domain
+
+import com.vaultdrop.mobile.data.local.dao.UserPreferenceDao
+import com.vaultdrop.mobile.data.local.entity.UserPreferenceEntity
+import javax.inject.Inject
+import javax.inject.Singleton
+
+/**
+ * Drapeau « mode local » (on utilise l'app sans compte) persisté en
+ * `user_preferences`. Permet de restaurer [com.vaultdrop.mobile.ui.auth.AuthState.Local]
+ * au redémarrage au lieu de retomber sur la page de connexion.
+ */
+@Singleton
+class LocalModeStore @Inject constructor(
+    private val userPreferenceDao: UserPreferenceDao,
+) {
+
+    suspend fun set() {
+        userPreferenceDao.upsert(
+            UserPreferenceEntity(PrefKeys.LOCAL_MODE, "1", System.currentTimeMillis()),
+        )
+    }
+
+    suspend fun get(): Boolean = userPreferenceDao.getValue(PrefKeys.LOCAL_MODE) != null
+
+    suspend fun clear() = userPreferenceDao.delete(PrefKeys.LOCAL_MODE)
+}
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