Seriously. This is it. You need no other. – insTuner - Chromatic Tuner with Tone Generator Review

This app is stunning. It's easy to use and does everything I need it to. I use it to play tones into a Bluetooth speaker for tuning pipe organs. With the custom pitch selection and any temperament you could ask for, this app really has everything. Congrats, app creator friends!!!
Review by uncleSchnidker on insTuner - Chromatic Tuner with Tone Generator.