I love Cleartune. It is easy to use and pretty to look at. I’ve said for a few years now, this is the kind of app I expect to be required at conservatory. I teach all ages and levels, so I am thrilled to be able to use the same app for everyone. The features I use the most are the tuner (with the tone generator or the needle display) and the selectable waveform. I notice that many students are able to hear the intonation differently depending on the waveform shape. I love being able to adjust this for each individual ear. rachelviolin.com