The Bongo Drums HD app is a free Android app for learning how to play the African drums. The app is constructed very simply, as it has just two drums that you can pick the skin for. You can also change the background of the app as well as record and delete audio files. The bongos themselves have three sounds each: rim, middle and center that are ascending in pitch. You can also play what you have recorded, play over other songs, like the app and share it. Even if best used on a tablet with a really large screen, the app is functional on smartphones as well. There are ads online, but not offline and the app is not interrupted by ads, they just appear at the top of the screen. The app has really good polyphony and great overlapping, as you do not hear that. The length of the sounds played is not a lot of time and you can therefore play really fast African tempos. The Bongo Drums HD is really a quality app that even if not professional, it does know how to make use of the phone's or tablet's microphone to get the sound just right to what seems to be an automatic equalizer.