diff --git a/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/auth/SessionManager.kt b/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/auth/SessionManager.kt
index 572c92e..420f4be 100644
--- a/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/auth/SessionManager.kt
+++ b/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/auth/SessionManager.kt
@@ -4,19 +4,22 @@ import com.vaultdrop.mobile.data.remote.ApiClient
 import com.vaultdrop.mobile.data.remote.dto.LoginResponseDto
 import com.vaultdrop.mobile.domain.ActiveUserStore
 import com.vaultdrop.mobile.domain.DeviceIdentity
+import com.vaultdrop.mobile.domain.LocalModeStore
 import javax.inject.Inject
 import javax.inject.Singleton
 
 /**
  * Orchestration de la session (restauration/sauvegarde/purge) : relie le store
  * sécurisé, le miroir `active_user_id` et le token en mémoire lu par
- * `AuthInterceptor`.
+ * `AuthInterceptor`. Le drapeau « mode local » est persisté à part
+ * ([LocalModeStore]) pour survivre aux redémarrages.
  */
 @Singleton
 class SessionManager @Inject constructor(
     private val secureTokenStore: SecureTokenStore,
     private val activeUserStore: ActiveUserStore,
     private val tokenProvider: TokenProvider,
+    private val localModeStore: LocalModeStore,
 ) {
 
     /** Restaure la session persistée (si présente), sinon null. */
@@ -30,6 +33,7 @@ class SessionManager @Inject constructor(
     suspend fun save(token: String, user: com.vaultdrop.mobile.data.remote.dto.UserDto) {
         secureTokenStore.save(token, user)
         activeUserStore.set(user.id)
+        localModeStore.clear()
         tokenProvider.current = token
     }
 
@@ -38,6 +42,12 @@ class SessionManager @Inject constructor(
         activeUserStore.clear()
         tokenProvider.current = null
     }
+
+    suspend fun isLocalMode(): Boolean = localModeStore.get()
+
+    suspend fun setLocalMode() = localModeStore.set()
+
+    suspend fun clearLocalMode() = localModeStore.clear()
 }
 
 data class AuthSession(
diff --git a/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/data/local/entity/UserPreferenceEntity.kt b/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/data/local/entity/UserPreferenceEntity.kt
index bb05b40..f35d297 100644
--- a/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/data/local/entity/UserPreferenceEntity.kt
+++ b/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/data/local/entity/UserPreferenceEntity.kt
@@ -7,7 +7,8 @@ import androidx.room.PrimaryKey
 /**
  * Miroir de la table `user_preferences` JS (`key`/`value`/`updated_at`).
  * Clés connues : `device_user_id` (32-hex, généré une fois), `sync_mode`,
- * `active_user_id` (miroir non-sensible du compte connecté).
+ * `active_user_id` (miroir non-sensible du compte connecté), `local_mode`
+ * (app utilisée sans compte).
  */
 @Entity(tableName = "user_preferences")
 data class UserPreferenceEntity(
diff --git a/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/domain/PrefKeys.kt b/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/domain/PrefKeys.kt
index 031b37b..efd4ef9 100644
--- a/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/domain/PrefKeys.kt
+++ b/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/domain/PrefKeys.kt
@@ -4,6 +4,7 @@ package com.vaultdrop.mobile.domain
 object PrefKeys {
     const val DEVICE_USER_ID = "device_user_id"
     const val ACTIVE_USER_ID = "active_user_id"
+    const val LOCAL_MODE = "local_mode"
     const val SYNC_MODE = "sync_mode"
     const val THEME = "theme"
     const val SERVER_URL = "server_url"
diff --git a/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/ui/auth/AuthViewModel.kt b/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/ui/auth/AuthViewModel.kt
index 2ead6c7..ad3e4e9 100644
--- a/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/ui/auth/AuthViewModel.kt
+++ b/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/ui/auth/AuthViewModel.kt
@@ -37,8 +37,11 @@ class AuthViewModel @Inject constructor(
 
         viewModelScope.launch {
             val session = sessionManager.restore()
-            _authState.value =
-                if (session != null) AuthState.SignedIn(session.user) else AuthState.SignedOut
+            _authState.value = when {
+                session != null -> AuthState.SignedIn(session.user)
+                sessionManager.isLocalMode() -> AuthState.Local
+                else -> AuthState.SignedOut
+            }
             authRepository.registerDevice()
         }
     }
@@ -67,7 +70,10 @@ class AuthViewModel @Inject constructor(
     }
 
     fun continueWithoutAccount() {
-        _authState.value = AuthState.Local
+        viewModelScope.launch {
+            sessionManager.setLocalMode()
+            _authState.value = AuthState.Local
+        }
     }
 
     /** Purge la session et revient en mode local (sans repasser par le login). */
@@ -76,6 +82,7 @@ class AuthViewModel @Inject constructor(
             Timber.d("auth: session purgée (mode local)")
             withContext(Dispatchers.IO) {
                 sessionManager.clear()
+                sessionManager.setLocalMode()
             }
             _authState.value = AuthState.Local
         }
@@ -86,6 +93,7 @@ class AuthViewModel @Inject constructor(
             Timber.d("auth: session purgée (signOut)")
             withContext(Dispatchers.IO) {
                 sessionManager.clear()
+                sessionManager.clearLocalMode()
             }
             _authState.value = AuthState.SignedOut
         }