Tune your mandolin with the #1 tuner

Download the GuitarTuna app to get in tune and practice like a pro anytime, anywhere. Start for free.

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Join millions getting in tune with GuitarTuna

#1 tuner in AppStore & Google Play
4.8+ AppStore & Google Play rating
140M Downloads worldwide
100+ Tunings available
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Get your mandolin in tune with the GuitarTuna app

Fast, accurate, and easy-to-use, tune your mandolin and practice like a pro with the GuitarTuna app. Discover 100+ tunings including standard mandolin tuning: G D A E. The app also supports 15 instruments, so it’s easy to switch between other instruments.

Improve your playing skills with chord trainers, a chord library, a handy metronome, and more.


Mandolin tuning made easier with professional accuracy

Getting your perfect mandolin tuning is easy with audio recognition technology combining with noise cancellation. The GuitarTuna tuning app listens to your pitch while you tune, guiding you with real-time feedback. Accurate and reliable, the app gives you pro-quality tuning every time.

Trusted by mandolin players worldwide

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    Very reliable tuner



    This is a great app! Very easy to use and very reliable, if you are just starting out, you can take a big worry off your mind, by getting in tune quickly and easily with this app. I also have friends who play guitar professionally, and use this app right before a gig! Highly recommended!

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    Such a great app



    In this app, you can tune very easily and quickly. You can also see the chords. If you are full beginner then directly install the app now and then you will know the value of this app!

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    Secret weapon



    Not only is it a tuner (best app tuner I've used personally) but it also has a metronome, games, chords, and a plethora of instruments to choose from and it's SUPER easy to navigate. I love it! From one musician to another, THANKS!!!

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    I used to not want to play my guitar because tuning it was such a pain, but then I got this app and now it’s SO fast! I'll be with people and I’ll tune my guitar with this app then they go “woah that was fast!”. 10/10 recommend.

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    Really good app.

    Sean Delaney


    Highly recommend. Has lots of related material for anyone getting started or more. New technology always seems to be added. Tried a few of the songs and the app moves based on your playing. Great for anyone. Have tested the app against other tuners and this app can fine-tune. Definitely download so you always have a tuner and song helper.


Get in tune and play your favorite songs with the #1 tuner app

Download the GuitarTuna app to access the pro-quality song library of chords and lyrics. Now on iOS and Android. Start for free.

GuitarTuna app features

  • Metronome Metronome With tap-for-tempo and multiple time signatures.
  • Chord games Chord games Plus chord library, trainers, and more.
  • Chromatic tuner Chromatic tuner With alternative and custom tunings, and manual mode to tune by ear.
  • 15 instruments 15 instruments Tuning for stringed instruments including ukulele, bass, mandolin, and more.

How to tune your mandolin

Follow these easy steps for beginners
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    1 Start in standard Download the GuitarTuna app and select Standard tuning. When you’re first starting to play mandolin, you’ll typically be using the standard mandolin tuning: G D A E.
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    2 Pluck a string Start tuning your mandolin by playing any string with the right tension — not too heavy, not too light. GuitarTuna will listen to your pitch with its built-in microphone.
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    3 Adjust your tune Turn the tuning pegs on the headstock of your mandolin. You’ll hear the pitch get higher or lower as tension is applied or removed. Turn until the app shows you’re in perfect tune!