Tuner - gStrings

Contains adsIn-app purchases
237K reviews
Content rating
Everyone
10M+
Downloads
Content rating
Everyone
Learn more
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About this app

gStrings is a chromatic tuner application measuring sound pitch and intensity. This is the ad supported version.

It will let you tune any musical instrument (violin, viola, violoncello, bass, guitar, piano, wind instruments, your own voice/singing).

Features include:
1. multiple built-in instruments and tunings,
2. support for user-defined custom tunings,
3. a long list of built-in temperaments (just, pythagorean, meantone, comma, etc.),
4. support for user-defined custom temperaments,
5. orchestra tuning (shifting/redefining tone frequencies),
6. pitch pipe,
and many more.

If you were looking for a guitar tuner, try it!

(*) the INTERNET permission is used for ads only.

(**) most of the historic temperaments were included courtesy of NetCat AG.
gStrings - a chromatic tuner for the guitar, violin, or any other instrument.
Updated on
Jul 8, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • This app may share these data types with third parties
    Device or other IDs
  • No data collected
    Learn more about how developers declare collection
  • Data is encrypted in transit

Ratings and reviews

229K reviews
Rick Strong
August 20, 2026
It makes me sad to give this anything but 5 stars. Longtime paid user, bassist, loved this app to pieces, but after the latest update...yikes. It seems less sensitive and reliable, more or less unusable for me. A lot of the time the needle seems stuck; playing string bass open strings seems to work more or less OK, but any other notes on the fingerboard are a gamble. I don't understand what this new update was supposed to fix, it was GREAT a few weeks ago.
2 people found this review helpful
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RL Carr
August 4, 2026
I just switched to this app & it's amazing. It is so precise, & very easy to use. Other apps I've tried, (you know the one with the fish), just aren't that accurate. Plus the all the unwanted extras. Ads! This is an excellent app. I highly recommend it to anyone who just wants to tune their guitar without the extra noise. Aloha tuna
2 people found this review helpful
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Thomas Kassebaum
July 10, 2026
I have been using this app basically since Android devices came out. Something messed up with the new update and it doesn't work anymore. The dial doesn't move, it doesn't sense notes. This is THE essential android app that I have always installed on every phone I've had. Please fix the bug so I can keep using it!
5 people found this review helpful
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cohortor.org
July 11, 2026
Thomas, please follow the instructions under Settings -> Troubleshooting. If selecting the "chromatic" instrument, and trying the 3 audio input source options would not resolve your issue, please send an email to gstrings_at_cohortor.org. Thank you for helping making this app better.

What’s new

Improved audio sampling initialization for Xiaomi devices.