How I Built Local-First Apps with React Native + RxDB (and Why Your App Probably Needs This Too) | HackerNoon
Briefly

Local-first apps are designed to function even in low connectivity scenarios, ensuring that users maintain access to necessary data. These applications process data locally, syncing with the server when a connection is available. This approach eliminates frustration associated with app failures during connectivity issues, leading to happier users and reduced emergency support. Building such an app involves using technologies like React Native and RxDB, with SQLite for local storage, to ensure data integrity and privacy through validation and encryption.
A delivery driver staring at a loading spinner because the app can't load their route without internet highlights the importance of connectivity for users. Lost time, lost money, and very angry users result when connections fail.
Local-first apps process data locally and sync it when connectivity permits. This ensures users remain satisfied and developers avoid emergency calls about app failures.
For building a local-first mobile app, React Native paired with RxDB was essential. A seamless local storage solution must manage data offline, sync efficiently, and withstand bad connectivity.
Using SQLite for local storage with added features such as validation and encryption is key for maintaining data integrity and protecting user privacy in mobile applications.
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