Guitar Tuner: Chromatic

Guitar Tuner: Chromatic is a free chromatic tuner for guitar and bass that uses real-time pitch detection through your iPhone microphone. Tune acoustic or electric guitars and bass guitars with no cables or extra hardware. The visual tuner shows a live Hz reading and color-coded feedback, so you can see when a string is in tune. Auto Mode detects the string you are playing, and 15 tuning presets include Standard, Drop-D, Open-G, and more.