It's the most powerful tool you've ever had in your pants! You know ... for tuning. That said, this is one of those nuggets on the App store you cannot afford to miss if you value being in tune and you take your smartphone with you when you go places. Yes to both? Then it's a no-brainer!

- Tune all strings at once! Just strum your guitar, and see the pitch of all strings instantly.
- Guitar/bass mode
- Drop-tunings
- 1:1 port of the award-winning PolyTune pedal (Guitar Player, Guitar World, Premier Guitar, MIPA, NAMM Best in Show 2010, etc.)
- Based one the world’s best selling pedal tuner used by countless pros such as Steve Vai, John Petrucci, Steve Morse, Orianthi and many more!

PolyTune is the world's first polyphonic tuner that will have future guitarists wondering how we ever got by without it.

The magic lies in a never before seen approach to tuning aimed at speed, accuracy and ease of use, which allows you to get in tune fast, and back to doing what you love: playing.

The PolyTune iPhone app is a 1:1 port of the award-winning PolyTune pedal tuner, and PolyTune for iPhone delivers exactly the same features and tuning technology as the pedal version. The pedal version is the fastest way to tune on-stage, whereas the iPhone app is the fastest and most convenient way to tune off-stage.

- Reference pitch from 435Hz to 445Hz
- Drop tuning from E-flat to B
- 0.5 cent accuracy
- 2 chromatic tuning modes: Needle and Stream
- MonoPoly recognizes whether one or several strings are played at once

What’s New

Version 2.0.0

-updated UI
-Graphical changes
-new icon

Ratings and Reviews

2.8 out of 5
42 Ratings

42 Ratings

Slolo_ ,

Doesn’t work

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.

Fencer4Life ,

Worth the buy!

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.

eltalon ,

No capo functions

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...


TC Electronic A/S
46.9 MB

Requires iOS 9.0 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating
Rated 4+
© 2017 TC Electronic


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

More By This Developer

You May Also Like