Blockchain technology is being explored in mobile apps for secure, tamper-proof data management. While not a replacement for mobile databases, blockchain can complement them by verifying data integrity and enabling decentralized applications (dApps). For example, health or financial apps may store sensitive data locally using SQLite or Realm, while logging critical events on the blockchain for auditability. Hybrid models store frequently accessed data in mobile databases and synchronize transactions to Ethereum or other decentralized networks. Mobile frameworks like React Native and Flutter now support blockchain libraries, making it easier to integrate both technologies. This combination offers transparency, security, and improved data ownership.
Cross-Device Data Synchronization
In multi-device ecosystems, users expect their data to be accessible mobile database from any device. Mobile databases must support synchronization with cloud services to allow seamless access. This includes syncing app data between a smartphone, tablet, and even desktop. Firebase, iCloud, and AWS Amplify offer automatic cross-device sync features. Developers must manage sync tokens, versioning, and device IDs to prevent duplication or loss. Security is vital—data should be encrypted and authenticated during transit and storage. Cross-device sync increases user satisfaction and enables workflows that span multiple platforms, such as editing documents or continuing gameplay across devices.