Excellent, beyond equal temperament

Implementation is elegant. Dial up or down for notes, jump octaves with a button, view your pitch with a fast needle, read it in Hertz. Also works as a pitch pipe. But AWESOME for me is the option for many alternate tunings, e.g. just, meantone, Werkmeister, etc., as well an exact reference pitch, e.g. A = 444, or C = 256. It will also calibrate to another instrument’s pitch, e.g. the piano already on stage. Seems very precise and bulletproof too. No “buts” about it; simply splendid.

TuningGeek about Cleartune, v2.1.3