Tune your guitar, bass or other instruments with n-Track Tuner.

Use this tuner in an easy, intuitive and free way with the integrated microphone of your smartphone.

Downloaded over 5 million times!

Just put your iPhone, iPod Touch or iPad next to your instrument and play each string.

High precision and sensitivity thanks to the advanced audio recognition algorithm also used for n-Track Studio 8.

n-Track Tuner works great as a guitar tuner, violin, viola, violoncello, bass, piano and wind instruments tuner.

NEW: 6 different views:

•||| Spectrum Analyzer |||•

The spectrum analyzer provides a visual feedback of the notes played by the instrument and shows a small arrow to highlight the harmonic whose pitch the tuner is tracking.

•||| Instruments |||•

Use the manual mode to select and tune each string according to the selected instrument tuning (guitar, bass, violin, viola, cello, double bass, banjo, ukulele, mandolin, harp, and piano)
Get the pro version to unlock all instruments views.

•||| Tune Fork |||•

For those who prefer to manually tune their instrument the 'Diapason' view lets you play a reference tone, 'A' (440 hz) or any other note that you can select dragging the frequency slider.

•||| Needle |||•

A handy old style tuner to accurately detect the frequencies of your instrument.

•||| Sonogram |||• (PRO feature)

The "Sonogram" tab shows how the frequency spectrum evolves with time, and shows how the note that the tuner is following evolves by tracing a green line.

•||| 3D view |||• (PRO feature)

3D view lets you follow how the audio spectrum changes over time.


• adjust tuning sensitivity and precision up to 0.1 cents

• western and latin note namings, alternate temperaments

• calibrate the tuner for non-standard tunings: tune the reference note, tap on the display and select 'Calibrate' to set the note as the new reference

• adjust the spectrum analyzer visualization options, select thicker spectrum lines, smooth out or highlights peaks, increase or decrease spectrum accuracy, zoom into a specific area of the spectrum

Note: 2nd and 3rd generation iPod Touch require an external mic connected.

Contact us:

What’s New

Version 3.0.4

- Minor bugs fixed

Version 3.0.0
- A completely new Interface with a simple menu to switch between 6 different views. - 6 different views: Spectrum, Instrument, Needle (NEW), Sonogram, Tune Fork, 3D view. - UX improvements - minor bugs fixed

Ratings and Reviews

4.7 out of 5
1.7K Ratings

1.7K Ratings

Trekease ,

Great tool for fun and professional use

I first used N-track tuner 5 years ago when I forgot my regular guitar tuner and found that my iPod could be used as one. The spectrum analyzer can provide a visual feedback to observe how plucking the string at various points results in different harmonics. I also used the app in my HS Physics class for observing different frequencies and harmonics of tuning forks and sound generating experiments. Also as a fun exercise to confuse students I generated annoying high pitch frequencies that only they could hear to assess their hearing loss due to age or damage due to loud music! It really got their attention if tied in to a speaker. As an amateur musician and engineer I highly recommend this app, just purchased the advertisement free version after 5 years of using the app.

SteezyWunder ,

Best app for audio analysis

I had the free version and loved how you could see which note you were tuning and what frequency it is at on the fft spectrum. When you can see all the harmonics on the spectrum while tuning it becomes quite magical. The 2d and 3D sonogram are the best and most functional and best looking on the App Store. Haven’t found another app even close. Just playing a single note on any instrument to see the harmonics is endless fun. I use this app for listening to any sounds around me to see how cool it looks on the 3D sonogram. Sometimes I use it to tune my guitar

VillageDude ,

A useful app

Very clear and easy to use. Hold your finger on a frequency peak and know exactly what frequency and dB its at. I have liked N-Track multichannel recording programs and like this too.


n-Track S.r.l.
60 MB

Requires iOS 8.0 or later. Compatible with iPhone, iPad, and iPod touch.


English, Catalan, Czech, Danish, Dutch, Finnish, French, German, Greek, Hebrew, Hungarian, Indonesian, Italian, Japanese, Korean, Norwegian Bokmål, Polish, Portuguese, Romanian, Russian, Simplified Chinese, Slovak, Spanish, Swedish, Traditional Chinese, Turkish

Age Rating
Rated 4+
© (C) 2013 Flavio Antonioli
In-App Purchases
  1. pro features and remove ads $7.99


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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