A Flutter plugin to store data in secure storage:
Read moreIs flutter secure storage persistent?
Yes it saves once the app is closed . You can check the example app here: github.com/mogol/flutter_secure_storage/tree/develop/example This shows that keys can be created and once the app is closed and reopened, the keys are not wiped.
Read moreIs React Native app secure?
react-native-encrypted-storage – uses Keychain on iOS and EncryptedSharedPreferences on Android. react-native-sensitive-info – secure for iOS, but uses Android Shared Preferences for Android (which is not secure by default ). There is however a branch that uses Android Keystore.
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