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


Featuring an extremely high-quality guitar tuning engine, you can easily and accurately tune your guitar with a level of precision found in high-end professional tuning equipment - all in the palm of your hand whenever you need it!

Free Guitar Tuner App

Have you ever gone online or visited your local guitar store to look at buying a tuner? It’s not uncommon to see tuners that can cost upwards of $100. And, for the most part, tuning is all they do.

You can download GuitarTuna for free (that’s right – nada, zilch, zippo) and you’ll have one of the best guitar tuner apps on your Android or iOS smartphone for quick and easy access.

Accurate tuning is just one of many incredible features that GuitarTuna has to offer – you’ll also get a ton of handy features such as chord learning games, a metronome, an extensive chord dictionary, support for multiple alternate tunings, pitch calibration, and also learnable songs as well – all for the same low price of absolutely nothing!

Tuning a guitar using a mobile application

100 Million Downloads and Counting

Impressive tuning functionality just scratches the surface of what our guitar tuner can do. It also has an incredible feature set that will let guitar players of all levels improve their playing skills. But don’t take our word for it – ask the over 100 million users that have downloaded the app since 2012!

“I literally tell all my guitar player friends to try it and not one has said anything negative about it. I love it! I can’t imagine how the developers can make it better than it already is but something tells me they will! Thanks for making an awesome app. From one musician to another, THANKS!!!” – Brad 04/15/2018

Guitar Tuner App

Playing Tuning Notes for the Guitar

In its simplest Manual mode, GuitarTuna will generate extremely accurate tones right through your phone’s speakers. You simply select the string by pressing the corresponding button on the app’s tuning screen and a realistic guitar tone in the exact pitch you need will be generated, along with an icon that will help to tell you if you are too sharp or too flat. It’s the perfect way to get your guitar tuned up quickly, and it also has the added benefit of helping you train your ear – an indispensable skill that will benefit any guitar player.

Once you have the string tuned up to the correct pitch, you then move on to the next one. Simple enough, right? GuitarTuna can actually make things even easier for you with the flexible Automatic mode – simply play a string and it’s smart enough to figure out what string you are trying to tune! Once it’s locked in on the note it will then guide you to a perfect pitch just as the Manual mode will.

Guitar Tunings

Guitar Tuning Quality

Most physical tuners require you to plug in with an instrument cable (which can be super inconvenient), or they do have some built-in microphone capability as well – similar to using the mic from your smartphone with a guitar tuner app. You may find that the reliability of other tuners – especially when using the mic feature – just isn’t very good. The indicator may bounce around erratically and you’ll have a hard time getting it to remain consistent enough to tune up as you need to.

GuitarTuna uses the world’s most advanced audio recognition algorithm – the exact one that powers the incredible Yousician app. This gives you one of the most accurate and stable tuning platforms available online today as it will lock on to the note you are playing and easily let you tune to pitch.

And…did we mention that it’s completely free to download?

Free Guitar Tuner

Additional Guitar Tuning Tools


Standard, drop D, drop A, half step down and more


With tap-for-tempo and multiple time signatures


For alternative tunings and any instrument


Ear training, chord guide, games, and exercises

How To Tune a Guitar

Simply put, if your guitar isn’t tuned properly then you’ll find it hard for things to right while you’re playing. It’s a must to do it the right way and learn how from the very first time that you pick up the guitar to learn how to play.

When you’re first starting to play, you’ll typically be using standard tuning on a six-string guitar. From the lowest (thickest) string to the highest (thinnest) string, the notes are laid out as follows:

• Sixth string: E
• Fifth string: A
• Fourth string: D
• Third string: G
• Second string: B
• First string: E

For each string to sound at the right pitch, it has to have the right amount of tension on it. That is adjusted by using the tuners that are on the headstock of your guitar. It’s pretty easy to see how they work – pluck a string and then turn its tuner in both directions. You’ll hear the pitch get higher as more tension is applied, and get lower as tension is removed and the strings are loosened up.

With GuitarTuna, you’ll have the most advanced, accurate, and useful guitar tuner app available to help you spend more time playing and less time having to tune up.

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