This is the CourtCounter App similar to the one that is of Udacity's Android Beginner's course but developed using ConstraintLayout and compatible with landscape mode
Feel free to use this for educational purpose
This app runs on devices with Android KitKat and above
Once you fork the project, the apk file can be found in: app\build\outputs\apk\debug
If not found, click the build option on the Android Studio and then find it in the above mentiond location
Download the apk-debug file and install it on your android mobile for quick experience
Feel free to use it in the landscape mode too