This piece of software is a mobile application, built with Google's Native Cross Platform Framework Flutter. It started 2020 as an example for a Masterthesis about Mobile Cross Platform Development (Tag v2.0).
You're going to need Flutter installed and available on your commandline. I recommend Android Studio with Flutter/Dart Plugin as preferred IDE.
flutter packages get
flutter packages pub run flutter_launcher_icons:main
flutter pub global activate devtools
flutter pub global run devtools
flutter run
Checkout this resource for further CLI love