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AccuTune - Guitar Tuner

By Positive Grid Inc

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- AccuTune is a super-accurate (±1 cent) chromatic tuner.
- More than 1 million users of AccuTune.
- Featured worldwide by Macworld, Guitar World, Guitar Player, Premier Guitar, Guitarist.

AccuTune responds either to notes captured by the iPhone or iPad’s microphone, or through a guitar adapter like Positive Grid’s JamUp Plug.

It provides two different views: the top of the screen is a standard meter display and the bottom a note-wheel. Both offer a great level of detail, making precise tuning easy.

Pressing the Setup button brings you to the Settings screen, where you can change the calibration from the default 440 Hz, set transposition, adjust temperament, and more. Most importantly, the AccuTune features a smooth response, making tuning easy.

Developed by Positive Grid, the leading developer of music software tools. We focus on things that are solid for working musicians, with simple interface and cutting edge algorithm.


- Accuracy range: ±0.01 semitone ( ±1 cent)
- Fast responsive ±25 cent range for fine tuning
- Easy-to-use note wheel display
- Configurable needle damping factor
- Selectable temperaments
- Support for transposing instruments
- Adjustable A4 calibration in 0.1 Hz resolution

More Information:

What's New in Version 2.1

- New and improved algorithm
- Retina display support
- Bug fixes


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Customer Reviews

Almost great

Best, most precise, most stable tuner out there. Easy to read display, straightforward and clean user interface. And you can adjust the reference pitch, select alternate temperaments, etc.


it only has landscape orientation display. I have an iPad, and I use at gigs it to store sheet music, so it's in a stand in portrait orientation. So if I try to use this otherwise ideal tuner, the display is sideways! Come on guys, almost every other app in the world orients its content to match the rotation of the device it's running on. Please add this fundamental feature!

Just as good as my 40 dollar tuner!

I bought this app and tuned my Gibson guitar with it. After that, I compared the results with a 40 dollar tuner that I bought a few months ago and found that ACCUTUNE WAS PERFECT. I feel so silly for wasting my money on a physical tuner when 99 cents would have got me the same result. Don't make the same mistake I made, buy this app and save your money.


Perfect tuning app. I tried it on a few instruments and it worked on most of them. It's easy to set up and use, the customization options are simple to understand and it's very accurate. The layout and design look brilliant as well.

AccuTune - Guitar Tuner
View in iTunes
This app is designed for both iPhone and iPad
  • $2.99
  • Category: Music
  • Updated:
  • Version: 2.1
  • Size: 3.5 MB
  • Language: English
  • Seller:

Compatibility: Requires iOS 5.0 or later. Compatible with iPhone, iPad, and iPod touch.

Customer Ratings

Current Version:
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