The Snail 4+

Absolute Tuning


    • 4.0 • 35 Ratings
    • $1.99



Similar to the human cochlea where the different frequencies are split-up and analyzed, The Snail for iOS uses a spiral grid to visualize root notes and overtones of any incoming sound with utmost precision. The Snail is based on recently developed technology making instrument tuning easy and audio analysis music-oriented and fun to watch.

Tune any instrument with utmost precision

Version 2 offers an additional guitar tuning mode that is available in the tuning view. Just tap on a dedicated string name, play a note and adjust the guitar tuning accordingly. Another major improvement is the new split window mode. Whenever you do any adjustments to parameters you now see how the edits affect the visualization in the upper section. This works in both visualization modes. One mode is the snail grid, a complete musical overview of the audio spectrum. The other one, the tuner view, is especially designed to focus on the root note for tuning purposes. In both views there is a sine tuning oscillator available which is controlled simply by touching the desired note on the iPhone display. There are a lot of customizable parameters. No problem if you would like to tune transposing instruments or if you need a tuning reference other than 440 Hz.

Patented technology

The well-known IRCAM institute for acoustic and music research in Paris is responsible for the new technology of detection and visualization. It is a patented invention by Thomas Hélie, CNRS researcher at the Sciences and Technologies for Music and Sound (STMS) Laboratory (IRCAM/CNRS/Sorbonne Université). The Snail is also available for macOS and Windows, as stand-alone app or plug-in (VST3/AU/AAX), distributed by Plugivery.

Key features

• Precise audio analysis and instrument tuning in two modes.
• Snail view for a sophisticated visual representation of root note and overtone structures.
• Tuner view to tune instruments and to control pitches of voices and other sources.
• Fast access guitar tuning (GT) mode.
• Split window settings menu.
• Visual gain and mic gain controllers.
• Switchable auto detection.
• Touch sine tuning oscillator.
• 2 color modes: coherency index and magnitude.
• Adjustable grid range (octaves).
• Setup for transposing instruments.
• Many customizable parameters like tuning reference, frequency tracking and audio window size.

What’s New

Version 2.3.5

- Tuning Reference (frequency of A4) is now a slider instead of a text box. Reference frequency ranges from 392Hz to 450Hz.
- The Tuning Reference slider has ticks for common frequencies: 415Hz, 430Hz, 432Hz, 440Hz, 442Hz, 444Hz (NB: the first 3 are "magnetic").
- The tuning reference frequency is now correctly updated in overlay (left top).
- All sliders have been visually updated.

Ratings and Reviews

4.0 out of 5
35 Ratings

35 Ratings

Hotshot1339 ,

Slight drawback

The app doesn’t seem to be able to tune one single instrument while the rest of the ensemble is tuning and playing the same note as you. (There is a possibility that I was just very in tune today thought.)
Other than that the app seems to do everything as advertised.

Dhjdhj ,

The most awesome tuning and analysis app

Used it for years. Was bummed out when it stopped working on recent versions of iOS but they finally fixed it.

It’s a brilliantly clever way to view frequencies as you can see the harmonics of your instrument or voice as well.

It’s also available as a VST plugin and I use it with Gig Performer to tune my guitar during a show.

Developer Response ,

Hi Dhjdhj, the compatibility issue with recent versions of iOS has been fixed (in June 2022, since version 2.3.0). We hope you will enjoy The Snail again!

vinnie-bob ,

Updated!!! Completely functional again…

Ok, I downloaded there recent update and everything is working again! Thank you. This is a great audio app for tuning guitar and also nice to let it listen to a song and show you the fundamental bass notes, or on a solo instrument, each note. Also kind useful for pitch training and developing your ‘ear’. Good work IRCAM.

App Privacy

The developer, IrcamLab, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    Up to six family members can use this app with Family Sharing enabled.

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