diff --git a/lib/models/project.dart b/lib/models/project.dart
index 22a06fc..bfea2ef 100644
--- a/lib/models/project.dart
+++ b/lib/models/project.dart
@@ -11,6 +11,7 @@ class Project {
   final ProjectCrs crs;
   final String color; // hex, a UI-ban azonosításhoz
   final ProjectStatus status;
+  final bool isDefault;
   final bool isLocalOnly;
   final DateTime? lastSyncedAt;
   final DateTime createdAt;
@@ -25,6 +26,7 @@ class Project {
     this.crs = ProjectCrs.eov,
     this.color = '#185FA5',
     this.status = ProjectStatus.active,
+    this.isDefault = false,
     this.isLocalOnly = false,
     this.lastSyncedAt,
     required this.createdAt,
@@ -47,6 +49,7 @@ class Project {
         crs: crs ?? this.crs,
         color: color ?? this.color,
         status: status ?? this.status,
+        isDefault: isDefault,
         isLocalOnly: isLocalOnly,
         lastSyncedAt: lastSyncedAt,
         createdAt: createdAt,
@@ -62,6 +65,7 @@ class Project {
         'crs': crs.name,
         'color': color,
         'status': status.name,
+        'is_default': isDefault,
         'is_local_only': isLocalOnly,
         if (lastSyncedAt != null)
           'last_synced_at': lastSyncedAt!.toIso8601String(),
@@ -78,6 +82,7 @@ class Project {
         crs: ProjectCrs.values.byName(m['crs'] as String? ?? 'eov'),
         color: m['color'] as String? ?? '#185FA5',
         status: ProjectStatus.values.byName(m['status'] as String? ?? 'active'),
+        isDefault: _readBool(m, 'is_default', defaultValue: false),
         isLocalOnly: _readBool(m, 'is_local_only', defaultValue: false),
         lastSyncedAt: m['last_synced_at'] == null
             ? null
diff --git a/lib/services/app_database.dart b/lib/services/app_database.dart
index 1124082..473e46d 100644
--- a/lib/services/app_database.dart
+++ b/lib/services/app_database.dart
@@ -47,6 +47,7 @@ class AppDatabase {
         crs         TEXT    NOT NULL DEFAULT 'eov',
         color       TEXT    NOT NULL DEFAULT '#185FA5',
         status      TEXT    NOT NULL DEFAULT 'active',
+        is_default  INTEGER NOT NULL DEFAULT 0,
         is_local_only INTEGER    NOT NULL DEFAULT 1,
         last_synced_at TEXT,
         created_at  TEXT    NOT NULL,
@@ -157,6 +158,7 @@ class AppDatabase {
     await db.insert('projects', {
       'uuid': const Uuid().v4(),
       'name': 'Alapértelmezett projekt',
+      'is_default': true,
       'is_local_only': 0,
       'status': 'active',
       'created_at': now,