PolyTune

I was told this was the best guitar tuner on the App Store, and it is... when it works. About 90% of the time, it can’t detect that I’m even playing a note despite the lack of background noise even when I’m right up close to the mic. When it works, it is very accurate and I’m impressed with the polyphonic tuning, but I’ve downloaded another app that, although may not be as ‘super high quality’, works reliably. And the problem isn’t my phone. I’ve used the app on a few phones before I rated it just to be sure, and it’s just not reliable for me. Maybe it’s just buggy, maybe it’s a user error or whatever, but that’s my experience. I’ve stopped using it, and I wouldn’t recommend it to anyone unless their willing to risk a few bucks. Again, though, it’s incredible when it works, hence the generous three stars.

Gotta be honest, this app is so worth it. I think it might be the most spendy non-subscription app I've purchased, and I only regret waiting so long to do so. The pedal version of TC PolyTune2 is amazing, and the app does everything a $150 (MSRP) pedal does for 1/30th the price. One major advantage of the pedal version is how it isolates the instrument, and is not affected by ambient sounds, and that's perfect for noisy, musical environments, where a quick tune or de-tune is needed. I haven't experimented with it yet, but I'll bet I could use the headset jack with an adapter to get line-in on my iPhone or iPad--or use an effects send from a mixer. Anyway, great to use, easy to understand, scorchingly fast and accurate. SPEND THE MONEY.

I'd like to give this five stars, but I capo a lot of times… If it's so easy to add "de-tuned" guitar tuning options, why can't they go UP the neck from the regular E tuning, and do the F, F#, G, G#, A... etc. Seems pretty easy to add these features… Look, I know how to tune open and then capo after that, but a lot of times a capo messes with the tuning, usually makes One or two strings go sharp, so I like to tune right through the capo. Any flamenco guitarist would appreciate a capo function...

I was really disappointed when my trusty old Fastune HT6 became obsolete due to iOS 11 requiring only 64-bit apps, especially because the last time I looked for a more modern polychromatic tuner to replace it, I couldn't find one. I was relieved to discover the existence of PolyTune, which seems to work really well, and I love the simple, elegant interface.

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I've owned this App for years and its worked better than any other tuner on the App store, until it recently auto Updated itself to a new version with new look and function... The new version, is really quite insensitive and non responsive in general and specifically to the lower A and E strings of any acoustic guitar on all my iPhones and iPads including iPhone 7. Do not buy it - Since the company released their new hardware PolyTune clip product, it seems they deliberately dumbed down the App, to encourage the hardware purchase over the App.