If you are a beginner looking for a French horn learning app, then How To Play French Horn, developed by Josef Pavlik, might be just what you need. This free Android application provides fingerings for all the tones from F2 to F5. You can hear the French horn sound and see the fingering by simply pressing the piano key.

This app is not just for listening and learning, but also for practical comparison. You can play the sound on your Android device while playing your own horn to compare the pitch. Moreover, you can play this app like a piano and have fun with it!