I just tuned my 33 string Irish harp using this handy program and it works with even better accuracy than my traditional hardware chromatic tuner. I would highly recommend this for any stringed instrument. Thanks for such a fantastic and inexpensive progam!

Worked for me but I had to get close when tuning the low strings of my acoustic guitar or else the meter would fluctuate at first. Once I was close it was ok. But the odd thing was it worked perfectly when I tried my bass, so it works fine with the low end. I was watching the frequency and I think that when I was too far away it was picking up the fifth or something until I got closer. Tried it with every key on an acoustic piano and it worked perfectly until I got to around the lowest F key. Also I would suggest updating the audio tones in the future because they have a harsh attack and then decay a little and I'd prefer a simple even tone almost like a sine wave. Would it replace my Korg tuner? I dunno, but it did work better than I expected and for a dollar it was definitely worth it.

Tried a few of the free apps and found them to be questionable in accuracy; so far so good with this one. Simple interface is a plus too.

This is a great app. It's easy to use, and so far, it's the most accurate tuner I've used. And I love the look of the Chroma Tuner dial.

Just tested the accuracy of this poor tuner and it jumps between 164.19Hz and 166.88Hz - that is a 28 cent jump! Don't bother with this one...it's garbage. All the 5 star posts are obviously friends of the developer and are trying to help him sell his app - DO NOT BUY THIS APP - it is totally inaccurate and needs a lot of work!

I'm no expert at tuning but this application really helped and it works better than other iPhone tuners I tried. It's very nice and easy to use - I like that.

We were without our tuner last night at our gig and this app was a total lifesaver! Worked perfectly... crowd approved! Kudos to ChromaTuner.

Bought this app a few minutes ago, and my old guitar is back in tune and sounding great. So worth it, I would have paid more!