Example Concept: Offline data sync typically involves using a local database (e.g., SQLite, Room, Core Data) to store data locally on the device. When the app detects an internet connection, it synchronizes local changes with the server using background tasks or work managers. Conflict resolution strategies, such as last-write-wins or merging changes, are crucial to ensure data integrity. Implementing a retry mechanism for failed sync attempts and providing users with feedback on sync status can enhance the user experience.