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Pro Tuner is a well-designed Chromatic Tuner on iPhone/iPad especially for Guitar and Bass players. It's highly accurate (Up to ±1/1000 semitone (±0.1 cent) precise) and has more than 100 preset built-in tuning modes. Beside, you can also create your own/favorite tunings. Moreover, by tapping the strings, you can get REAL guitar reference sounds easily. Unlike other tuners, Pro Tuner works fantastic at low pitch. Pro Tuner supports two input modes: Built-in Microphone Mode and Line-in Mode; Guitar Clip Microphone is also supported.

=== FEATURES ===
* User-friendly, extremely easy to use.
* Universal APP, purchase once, available on all of your iPhone/iPod/iPad.
* Support chromatic tuning, especially optimized for acoustic/electric Guitar and Bass.
* Real guitar reference sound, helps to do coarse tuning or practice tuning by ear
* >100 built-in tuning modes.
* Customized tuning modes, supports 4~8 strings instrument
* Favorite tuning modes, add what you like to your favorite tuning mode list
* Input-Level indicator
* Support iPhone 5

=== SPECS ===
Tuning Range: A0 - C8 (Full Range) Up to ±1/1000 semitone (±0.1 cent) precise
Reference Pitch: Fixed 440Hz
Temperament: Equal Temperament
Clip Microphone: Supported
Inner Microphone: Supported

=== Built-in Tuning Modes (Reference Sound Provided)===
1. General Tunings
2. Lower Tunings
3. Higher Tunings
4. Dropped Tunings
5. Double-dropped Tunings
6. Major Open Tunings
7. Minor Open Tunings/Cross-note Tunings
8. Modal Tunings
9. Miscellaneous Tunings
10. 5 String Tunings
11. 7 String Tunings
12. 8 String Tunings
13. Bass Tunings
14. Ukulele Tunings
15. Mandolin Family Tunings
16. Banjo Family Tunings
17. Bouzouki Tunings

=== NOTICE ===
iPod Touch 3rd generation requires an external microphone.

For those who want to buy the clip sensor and the adapter, please check the link:

===About EUMLab=== 
EUMLab's goal is to unleash your music talent ! With magic technology, EUMLab provides many products to help you create or learn music. 

More about us on 
Follow us on Twitter/Facebook @EUMLab 
Questions? Write to us: 
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Our customers said:

"Works great with the iPhone! Best Tuner I have ever used!"

"Just got this app less than five minutes ago and tuned my guitar with it. It's so easy to use, and very accurate. Get it while it's free! And if you're looking at this while it's paid for, still get it! It's worth it.Merry Christmas! :)"

"Tried a few tuners and this one shined above the rest.Easy to use and I'll keep this on my phone for sure."

"Extremely accurate and love the high definition graphics an the UI!Thanks so much"

"very easy to use. Wish I had ten years ago"

" I just got my son his first guitar. This app is easy to use and has already been very handy. Must have for beginners and convenient for learning to hear notes too."

"Worked great to tune my mandolin. Requested mandolin tuning in a future update and received a prompt response"

"I don't have a bad thing to say about this app at like a charm"

and more…

Thanks, everyone. We will keep making the best music APPs for you.

What’s New

Version 1.7

1. Fix some bugs
2. Improve the experience for sharing

Thank you all for your support, and if you meet any other problems, just be free to drop us a line!

Ratings and Reviews

3.2 out of 5
45 Ratings
45 Ratings
Acoustic Faith ,

Worth it.

I have a Martin D-18 '67 and it has amazing resonance, I broke a string trying to tune it on another app that my friend had that was a lot more in price, and was a little hopeful after the reviews on this. Um, with this apps help I was able to tune my guitar right up, I found that if you tune it dead on the resonance tune may sound different for each string depending on what way it goes > or < even in green, so if you have resonance in your guitar tune them to the exact action for all strings after you pluck them. It's worth it!

Jorgeee! ,

Great tuner

This is exactly what you need for just about any stringed instrument. I love the way it is optimized for strings and lets you customize any number o strings and any tuning for each string. I have no stability problems with this on my iPhone 4S and ios 6.1. I use this to time my violin in record time. The only suggestion I would make is adding preset tunings for classical instruments. While the violin shares mandolin tuning, it would be nice to see preset tunings for violin, viola, cello and double bass.

the.amberarc ,

Don't buy this - Warning for new iPhones

Always loved this app. Never had a problem with it until I got the iPhone 6s+. It's almost as if the app cannot access the microphone in order to determine the note you are playing. Seems to just guess F# constantly. Seeing as this app has not been updated for over 2 years, I'm assuming the app and not the phone is to blame. Sorry app-goodbye. I found another one AND IT IS FREE!!!


Xanin Technology GmbH
14.1 MB

Requires iOS 4.2 or later. Compatible with iPhone 3GS, iPhone 4, iPhone 4s, iPhone 5, iPhone 5c, iPhone 5s, iPhone 6, iPhone 6 Plus, iPhone 6s, iPhone 6s Plus, iPhone SE, iPhone 7, iPhone 7 Plus, iPhone 8, iPhone 8 Plus, iPhone X, iPhone XS, iPhone XS Max, iPhone XR, iPad, iPod touch (3rd generation), iPod touch (4th generation), iPod touch (5th generation), and iPod touch (6th generation).



Age Rating
Rated 4+
© EUM 2011


  • Family Sharing

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

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