DaTuner is described as 'Highly rated chromatic instrument tuner for Android. It is designed to be very easy to use and to tune your instrument (guitar, ukelele, violin, bass, cello, mandolin, piano, harp, saxophone, balafone, harp, motorbike timing belt, wheel spoke, harmonica, kazoo)' and is a instrument tuner in the audio & music category. There are more than 25 alternatives to DaTuner for a variety of platforms, including iPhone, Android, iPad, Web-based and Android Tablet apps. The best DaTuner alternative is Chronal, which is both free and Open Source. Other great apps like DaTuner are Tuner App, Musekit, Tuneo and Musikus.