Exclusively featuring StopperStimmung™ (1988), a slightly stretched tuning creating an amazing and clear sound on your instrument by the tunings stunning structural symmetry. The temperament compromise is strongly lessened by symmetrically interfering harmonics making chords to appear as beeing pure tuned.

The essential of a tuner is tuning quality, not features. Choose your appropriate tuner out of three available guitar versions, to suit your specific needs:

The free version provides the classic E tuning template at LOWER historic 432 Hz pitch.

Classic EADGBE tuning template 440 Hz pitch.

Classic EADGBE tuning template and variable pitch selection between 415 and 460 Hz and double sensitivity for the professional classic guitar player.

TUNIC GUITAR PRO: The full version for the professional user requiring more tuning settings. Provides variable pitch (415-460 Hz), a selection of common open tuning templates (Classic, Classic half step down, Open E, Open G, Open D, Open C, DADGAD, Dropped D, Dobro) and highest sensitivity (0.02 cent resolution). Capo use on fret 1-5 supported, what also allows verification of saddle compensation for optimal nut height / nut distance on fret 1.

To change pitch, push on the pitch number and edit pitch as desired.

Green pointer:
Fine tuning resolution: 0.025 cent in a visible range of +-5 cent

Yellow pointer:
Coarse tuning resolution: 0.25 cent in a visible range of +-50 cent

Pluck the string to be tuned about one time per second, while muting the other strings. To handle the fine tuning indicator on this extreme precision level, measure the pitch by very small or no string tension changes. This requires some experience even for professionals but is honoured by an uncomparable sound experience.

Always tune your instrument in 2-3 cycles, as every change of one string affects the other strings. Tune your instrument often to achieve a good tuning stability. Pluck the string with a plectrum to produce an overtone rich sound with the microphone close to the instrument.

For sound examples, listen to the dobro guitar played by Thomas Maos on the album "Larger Than Life" (Silent Art Orchestra), entirely tuned with the Tunic software:

What’s New

Version 2.4.3

Support for iOS 12 and 13 and bugfix of calibration error

Ratings and Reviews

3.7 out of 5
3 Ratings

3 Ratings

LanceGould ,

It’s ok.

As it turns out, I had stumble across tuning the guitar in this manner by combining the 432 and just temperament (I think) on a couple different tuner apps I have. PitchLab and TuneAgain. Both of which have way more options. I DO like the quality of chords and intonation like this. And if you’re recording music, I’d say go for it, you’ll be impressed with how good it sounds. However, don’t think you can just pick up your guitar and jam with songs on the radio. You’re like a sixteenth to a fifth of a step out of tune. And when you’re used to playing in this tuning, hearing songs recorded in normal standard tuning sounds terrible. Be prepared for that.

Developer Response ,

Tunic Guitar 440 tunes A4 to 440 Hz, not 432. So using Tunic Guitar 440 does not produce a tuning that is a "sixteenth to a fifth" out of tune. Indeed: "And when you’re used to playing in this tuning, hearing songs recorded in normal standard tuning sounds terrible."

Aporeo ,

Worth the 10 bucks

This app works as advertised. To my surprise, it does in fact tune the guitar to a very high precision. I have tried two other tuners from the app store and have used several other traditional tuners and none can come close to this program. I have a Taylor 814-ce and it sounds amazing after being tuned with the Tunic. Chords sound cleaner and tighter. I tried to find more information about this method of tuning online and found very little information. I took a chance buying this program and for once it worked out. Bernhard Stopper should put out more information online so people can make a more informed decision. You can find recordings of guitars tuned with this tuner but there are no comparisons to guitars tuned with the average tuner so you can know what kind of sound you are buying. Also, for ten bucks I think a little more capability could be included, such as being able to tune a few steps up or down or capo tuning.

jaymiranda ,

Great Tuner

I am a newbie to guitars. Mine has been sitting in my room for about a month because I did not want to buy a new tuner. Found this one on the app store and it was amazing. It does not give you a bunch of options like other tuners claim to do in the app store. But if you just want the job done, then this is it. $10 was well worth it.


Bernhard Stopper
5.1 MB

Requires iOS 9.0 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating


  • Family Sharing

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

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