GuitarTuna is the easiest, fastest and most accurate tuner app in the world!
The ultimate tuner for guitar, bass, ukulele and all popular string instruments. GuitarTuna has been downloaded over 20 million times and is used by beginners and experts!

Why is it the world’s most popular tuner ever built?
• Simple and easy to use. Works with both electric and acoustic guitars and string instruments using the built-in microphone. No cables needed.
• Perfect for complete beginners. Recommended by guitar teachers.
• Simple and intuitive. Clear visual feedback with signal history.

Award winning audio technology:
• Built on the world's most advanced audio recognition algorithm - the same technology powering Yousician
• Professional accuracy for advanced players
• Auto mode tuner (for super fast tuning, hands-free, string by string)

Advanced tools for all musicians:
• Metronome: set at any tempo, change the beat manually or by tapping at the desired speed
• 6 Ultimate Chord Learning Games: learn, practice and master chords, and develop the ability to recognize them by ear
• Chord library: find any chord diagram easily and hear how it should sound
• Learn Guitar Songs: 4 songs with guitar notation (tabs) to play along and test your skills
• Alternative tuning sets
• Chromatic tuner

Works with:
• Electric and acoustic guitars
• Bass
• Mandolin
• Ukulele
• Viola
• Violin
• Cello
• Fiddle
• Balalaika
• Banjo
• Many other string instruments

Over 100 tunings available, including:
• Standard
• Drop-D
• Other drop tunings
• Open tunings
• Half step down
• 7-string tunings including drop-A
• 12-string

Additional features:
• Works in noisy areas, with background noise cancellation technology
• Designed by guitarists for guitarists and developed by the world’s leading audio engineers
• Improve your skills in chords, riffs, tabs, and ear training, and increase your picking speed, just like you would with guitar lessons / classes
• make the app look like your instrument by choosing different headstock visuals

Please be careful:
If it is your first time tuning the guitar or instrument, please be careful. We recommend watching a YouTube tutorial or asking a guitar player how it's done. Beginners risk snapping strings with improper tuning techniques.

Send us feedback:
Got ideas to make GuitarTuna even better? Send your ideas and suggestions to: or contact us through the form in

Download our other free music learning app:
Yousician - the best way to learn, practice and master the guitar, piano and ukulele

*** Ranked the #1 Education app in 119 countries ****
*** Selected twice as Editor's choice by Apple in 2015 ***
*** Over 25 million users ***

Learn more about Yousician on Youtube and Facebook

What's New

Version 4.6.5

- Minor fixes
- Yousician’s Weekly Challenges will soon be available in GuitarTuna!
If you experience any issues with GuitarTuna, please send an email to and we'll get back to you as soon as possible!

Ratings and Reviews

4.8 out of 5

1.9K Ratings

1.9K Ratings

Editors' Notes

Never be out of tune.

Fresh tuna


I've used every imaginable kind of guitar tuner over the years, from a $2 tuning fork to one that's built-in to a $3000 multiple effects rack, and this is my favourite. I've only used the basic function - tuning to E - but for that it's perfect! It's sensitive without picking up background noises that'll throw it off, it's perfectly accurate without skipping around and being overly touchy, the interface is great, really easy to read - it'd be GREAT for beginners. I only bought this coz the batteries were flat in my other tuners but I'm gonna keep on using it now whenever I can. I have it installed on an iPad so it's obviously not ideal for gigs but when I'm home I won't be using my Boss digital tuner anymore and that probably cost about 300 bucks more than this one! I don't remember what this cost but it was definitely worth every cent. There are probably plenty of free tuning apps but a good, accurate, easy to use, frustration-free tuner is well worth investing a few bucks in. You can't go wrong.
"Do yourself a favour!"

Looks pretty, but ...

Dave Whitla

I needed a tuner to set the intonation on one of my guitars and my physical unit was in for repair. Installed Guitar Tuna and soon found that I had to pay to. E able to choose arbitrary tunings. It wasn't clear what paying would give me, but it was certain that not paying didn't provide what I needed. So I paid full price for the "Pro" version. Step one sorted, I hit the first harmonic at fret 12 and ... FAIL - the app does not detect harmonics (or even octaves of a very limited range of fundamental notes). So I tried "custom" tuning ... FAIL - can't choose frequencies beyond the 3 octaves baked into the app. So now I'm down $20 and have another space waster on my iPhone. If your a serious guitarist looking for a software alternative to a physical chromatic tuner give this a miss.


Yousician Ltd
148 MB
Requires iOS 8.0 or later. Compatible with iPhone, iPad and iPod touch.
English, French, German, Italian, Japanese, Korean, Portuguese, Russian, Simplified Chinese, Spanish, Traditional Chinese
Age Rating
Rated 4+
© Yousician Ltd
In-App Purchases
  1. GuitarTuna Pro $19.99
  2. All In One $14.99
  3. Ukulele & Cavaquinho $6.99


  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

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