Step by step to store data locally in Flutter: В статье показывается 3 способа хранения персистентных данных в Flutter.
https://dev.to/thepythongeeks/step-by-step-to-store-data-locally-in-flutter-1mc9
https://dev.to/thepythongeeks/step-by-step-to-store-data-locally-in-flutter-1mc9