GuitarTuna Screenshot - the most downloaded tuning app in the world.


Mandolins are incredible sounding instruments that add color to genres ranging from Americana to bluegrass. What may not be all that incredible sounding is when it is out of tune!

Fear not – we have the perfect solution!

The mandolin tuner found in the GuitarTuna app will let you easily have your instrument sound as good as it was meant to. Featuring cable-less operation and impressive accuracy, our mandolin tuner app is a tool that you won’t want to be without!

Additional Madonlin Tuning Tools


The standard GGDDAAEE mandolin tuning and more


With tap-for-tempo and multiple time signatures


For alternative tunings and any instrument


Ear training, chord guide, games, and exercises

Free Mandolin Tuner App

Do an online search for ‘mandolin tuner’ and you’ll probably not come up with much. Most physical tuners are geared towards the guitar, or they are chromatic and are meant for a wide range of stringed instruments. And guess what? They all have a price, and in some cases, they will cost a lot more than you would have ever imagined.

With our mandolin tuner app, you will have a tool that is intuitively designed to tune your mandolin. What’s even better is that it can be downloaded right to your smartphone (for either Android or iOS) absolutely free!

Online Mandolin Tuner

How to Use Our Mandolin Tuner

Once you have our tuning app downloaded, using it is incredibly easy. You can quickly set it up for the mandolin by selecting ‘Folk Instruments’ in the Settings section, then choosing ‘Mandolin – Standard’.

Our mandolin tuner has two operating modes: Manual and Auto. Manual mode allows you to choose which string you want to tune. Auto mode is even easier – with the Auto mode, all you have to do is play a string, and our app will automatically determine what string you are trying to tune. You’ll see a small indicator right above the picture of the instrument headstock. As you adjust the tension on the string by turning the tuning pegs, the indicator will move on the screen, telling you if the pitch is too high or too low. Once the indicator reaches the middle of the screen, the string is in tune.

No matter which mode you are using, once one string is done you move on to the next until they are all tuned properly.


Mandolin Tuning Quality

Regardless of if you are using a physical tuner or one of the tuning apps available, it’s not really a surprise to see them some of them just do not seem to work very well. Many times the note recognition isn’t very stable, and that can lead to a lot of frustration getting your mandolin in tune. Not only will it take much longer than it should, but it’s also hard to have confidence that everything will sound as it should once you go through all that effort.

The mandolin tuner app that we provide will completely eliminate that problem. How? Simple – the world-class audio algorithm that drives the Yousician app is the same one we use for our tuner. This means that accuracy and reliability will never be a concern!

Free Mandolin Tuner

How to Tune a Mandolin

Players new to the mandolin may be a little confused by how they are set up. A mandolin is similar to a 12-string guitar in that one finger on your fretting hand is meant to hold down two strings at the same time. Unlike a 12-string guitar, though, each string pair on a mandolin is meant to be tuned to the same exact note instead of an octave apart. This can be incredibly difficult to do by ear, which is another reason why our mandolin tuner app is the perfect tool for you to have.

To tune a mandolin, you have to alter the tension on the strings to where it is set at the right point to sound out the intended note at the right pitch. Using the modes in our tuner app, you can easily tell if your note is sharp (pitch is too high, which means too much tension) or flat (not enough tension producing a note that sounds lower than it should).

We recommend starting to tune your string slightly flat and tune ‘up’ to the target note, as this will greatly enhance your tuning stability. Slow and smooth turns of your mandolin’s tuning pegs on the headstock is the key to getting the pitch just right.

For reference, the notes for standard tuning on a mandolin follow the pattern below. The fourth string pair is made up of the thickest strings that are closer to your chest when playing, and the first pair (thinnest strings) are the ones closest to the floor:

• Fourth string pair: G, G
• Third string pair: D, D
• Second string pair: A, A
• First string pair: E, E

It’s not all that often that you will come across a mandolin tuner app that has the features and quality that GuitarTuna gives you. Over 100 million users can’t be wrong – download GuitarTuna today!

Check out the app to learn and master guitar, ukulele, bass, piano or singing!