Great, with different tunings too! – Guitar Tuner - Ukulele & Bass Review

This tuner app is amazing because it has so many different tunings already programmed. It is very easy to set up your guitar when you’re trying to change to a different tuning. I also love that it gives the Hz both where you are and where you need to be. You can make fine adjustments accordingly and not overshoot your desired string pitch.
Review by jazzmurph on Guitar Tuner - Ukulele & Bass.