Flutter Local Storage Guide — SharedPreferences vs Hive vs SQLite Choosing the right local storage solution in Flutter directly impacts performance and code simplicity. Here's a practical breakdown of the three main options. SharedPreferences — Key-Value Settings Best for small primitives: user settings, theme, login state. dependencies : shared_preferences : ^2.3.0 Enter fullscreen mode Exit fullscreen mode class SettingsService { static const _themeKey = 'theme_mode' ; Future < void > saveTheme ( String theme ) async { final prefs = await SharedPreferences . getInstance (); await prefs . setString ( _themeKey , theme ); } Future < String > getTheme () async { final prefs = await SharedPreferences . getInstance (); return prefs . getString ( _themeKey ) ?? 'system' ; } } Enter fullscreen mode Exit fullscreen mode Hive — Fast NoSQL Storage Perfect for structured data, offline caching, and large datasets. TypeAdapters keep it type-safe.…