A school planner.
To compile the app, you need to have the Flutter SDK installed. This tutorial only covers compiling for Android. If you would like to compile the app for iOS, figure it out yourself.
Execute this command in your terminal / command prompt / PowerShell:
flutter build apk
# replace flutter with the path to your flutter SDK
The compiled apk file will be located in build/app/outputs/flutter-apk.
This app is a school project that I made in 4 days. It might contain millions of bugs and is not intended for day to day use.