Guitar Tuner, Violin: Tuneo

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21.8K reviews
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About this app

Tuneo, also knows as "Guitar and Violin Tuner" is an extremely accurate instrument tuner for many instruments, like guitar, violin, bass, ukulele, viola, cello, banjo and shamisen, including many alternate tunings and variants.

Professionals appreciate its precision, beginners quickly learn to tune their instrument properly. The application is easy to use thanks to a combination of a chromatic and a strobe tuner on one screen, and provides the most accurate tuning you can achieve.

The chromatic tuner precisely detects the frequency of the tone played on your instrument, and shows it on the chromatic scale. The target pitches are highlighted on the scale, and you can see how much is the tone out of tune. When you get close enough, you can use the strobe tuner for fine tuning.

The strobe tuner helps you to achieve extreme accuracy. The pattern is moving to the right when the tone is too high, indicating that you need to tune down. When it is moving to the left, just tune up. The slower the pattern moves, the better is your instrument tuned.

If you are in doubt how to use the tuner, please read the built-in help, and see the examples of the tuning process there.

The strobe tuner uses an independent algorithm from the chromatic tuner. While the chromatic tuner uses the Fast Fourier Transformation, the algorithm in the strobe tuner is much closer to what you can find in oscilloscopes, and is computed directly on the GPU of your phone or tablet.

You can also use the tuner to tune by ear. The buttons at the bottom of the screen play the reference tones and you can tune accordingly. The tones are synthesized, and respects the setting of the concert pitch.

The tuner has been tested with many guitars, violins, basses, ukuleles, banjos and shamisens.


• Guitar tuner for beginners & pros
• Other instruments: Bass, ukulele, viola, cello, banjo, shamisen
• Advanced noise cancellation - works even with a metronome on
• The most favorite alternate guitar, ukulele, banjo and shamisen tunings
• Precision tuner suitable for professionals
• Plays reference tones
• First-start tutorial to understand the usage
• Built-in help to understand the app better
• Two independent tuning algorithms: chromatic tuner using the Fourier transformation and strobe tuner emulating the stroboscopic effect
• Quick, precise, and accurate tuner
• Concert pitch frequency setting
• Note naming: English, European, Solmization
• Equal temperament
• Quick access to settings to switch between instruments
• Send feedback: Record the string, e-mail it directly from the application, and we will add it to our built-in tests
• Tested with many instruments, recorded for use in a test suite that is regularly run before releases

This tuner is ideal for all violins, guitars, basses, ukuleles, violas, cellos and banjos. You will absolutely love the sound of your instrument, and the music you play!
Updated on
Jan 11, 2024

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
Location, App activity and 2 others
No data collected
Learn more about how developers declare collection
Data is encrypted in transit
Data can’t be deleted

Ratings and reviews

21.1K reviews
February 8, 2024
I will miss this app, it has been a staple of my music room for years but I just realized it was tracking my location and sharing it with third parties which is unreasonable behaviour for a guitar tuner. I can't be mad I should have read the fine print. Lesson learned, and I'll be suggesting a replacement for all students. Left two stars for solid performance.
34 people found this review helpful
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Sam Stone
January 9, 2021
Easily the most accurate I've been able to find (unfortunately an absolute necessity for my low skill level). My favorite guitar sometimes has a tendency to lose tone on certain strings and specific points on the neck, and this helps me find the middle ground so I can try and keep it consistent. Very, very good for beginners or anyone with suspected similar issues. Pros may or may not need help, but this would be an excellent tool to validate tones/tuning even at that level.
76 people found this review helpful
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A Google user
April 4, 2019
oh, my god. I've been using apps for a decade, and nothing comes close. I have a lot of violins... I mean a lot of them.... strativarious, miesel, etc.... been using garbage apps, where it jumps around to different octaves and is next to impossible to use.... not this. simple. pick your instrument, and it tunes right in, with no jumping around. hear the tone you want simply and dials it in easily. no garbage in between that other apps make you go through. just simple tune in easy; right.
20 people found this review helpful
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What's new

• New name for the tuner: Tuneo.
• Major rewrite of the tuner.
• Added more accurate metronome tick sounds.
• New guitar tunings: Nashville, Open D minor (DADFAD).
• Added warning when alternate tuning needs non-standard strings.
• Fixed Manual tuner's layout on tall phones.
• Fixed artifacts showing in the Manual tuner on some phones.
• Improved the landscape layout of Manual tuner.
• Turkish translations thanks to Fuat Filizkol, Seckin Şahbaz and Tamer Karabulut.