Couchbase Mobile 2.x extends the capabilities of NoSQL JSON Document Store to mobile platforms such as iOS, Android, and .Net, enabling developers to create applications with offline-only and offline-first functionalities. It offers flexible deployment options, including using Couchbase Lite as a standalone embedded database in mobile apps, synchronizing data between mobile clients with a Sync Gateway, or syncing data to a Couchbase Server for cloud storage. The accompanying tutorial guides users on integrating Couchbase Lite 2.x in standalone mode within Android apps, focusing on database operations like creating, updating, and deleting documents. By following the tutorial, developers will gain insights into utilizing Couchbase Lite as a local data store, with further tutorials promised for expanding the app's functionality. For additional support, users are encouraged to reach out through various platforms such as Twitter, email, or the Couchbase Forums.