Local Data on device (without database)

Hello,

I want to write a time tracker app with FlutterFlow.

The data (projects, times, etc.) should be stored locally on the device.

At first I wanted to use SQLite, but unfortunately that doesn't work over the web. (LateInitialisationError _database)

What other type of data storage (i.e. no SupaBase or Firestore, but local) is possible?

Could the whole thing also be done with AppState data types and variables?

If so, how should you proceed?

How can data be read and saved?

Would it be possible for each registered user to have their own data structure?

Thanks in advance for any tips on this topic ...