A Chromatic Multi-Temperament Instrument Tuner:- Use your computer as an advanced instrument tuner.- Works with almost any instrument.- Short response time!- Range: 9 octaves, C1 to C10.- Precision: Better than 0.1 Hz up to ~C8.- Supports more than 30 different temperaments, from historic tunings such as pythagorean, meantone, just, or well tempered tunings, to the modern day equal temperament tuning.- You can select the root key for all tunings as well as add octave stretching if you want!- You can add your own custom scales and temperaments!- Automatic or manual note selection modes.- Reference tone option.- ''Beat tone'' option - tune without looking at the computer screen!- Easily readable tuning meter.- Full screen mode option.- ‘Report’ feature – create a table of measurement values (useful for instrument makers).- ''Power button'' makes it easier to share the ''audio input'' with other apps.- ‘Power save’ mode conserves battery power on portables.- Optional real-time spectrum analyzer graph.- Note hold time control - good for instruments that produce very short tones.- Optional calibration of input noise level, microphone type and low frequency filtering.- Use the internal clock or calibrate the pitch to an external reference source.- Optional MIDI input: Selecting notes from a keyboard (in ''manual mode'').- Optional MIDI output: Send the detected note to a synth.- And more! Download it and check it out!