As @falkTX , we already have a tuner - GX-Tuner - in the pipeline. This is FFT based tuner.
Once that is working, we’ll see about using Robin Gareus Tuna, a strobe tuner, as an option.
Has the tuner been completed?
Will it be visible from the LCD Screen?
Thanks!
The tuner will likely be something for version 1.2.
We finalized the tasks for 1.1 now and we’ll be announcing it soon. So shortly after 1.1 you’ll see the tuner working 
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We’ve just pushed it to v1.1 
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I´m Looking forward to v1.1.
A guitar tuner plugin was the very first plugin that I looked for when I first started the MOD.
Now really. Train your ears, gentlemen! Tuners are for loosers ;-p
The excuse “I need to tune silently on stage” is moot as well. If you’re at that stage, you can afford a guitar technician to do that for you.
lol
I´m just too lazy to use the tuning fork.
will be polyphonic? If it is not, consider developing.
The tuner that is currently in use for the MOD Duo is not polyphonic, it can be accessed by upgrading to version 1.1.0-RC1, and then holding down the right knob untill it shows up.
For more information, see this thread: Release 1.1.0-RC1 (Release Candidate 1)
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I installed 1.1 and super happy that the tuner is in place now.
Can we get some specs on the tuner? How accurate is it?
My favorite tuner is the strobotuner… Will there be an option for a strobo tuner type in the future?
Thanks for a getting this implemented!
One more pedal off my physical pedalboard… 
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GxTuner has a tuning range from 20Hz to 1000Hz (E0 - B5) were it tracks frequency’s accurate. Frequency’s outside this range wont be tracked correct and been therefore omitted.
This limitation allow us a extreme low DSP load.
It is monophonic using a twelve-tone equal temperament (GxTuner offer more (micro-tonal) temperament’s in it’s LV2 version).
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Is there a way to not mute the output signal while tuning? ie tune live while playing?
Does it use FFT and track overtones, or does it work like a strobe tuner and track phase of the fundamental?
How accurate is it?
What fraction of a semi-tone are each of the bars?
Thanks for the great work!
It use fftw3 and tracking maxima.
In the tuning range it is good for ~ 0.02 Cent
Can’t answer that for the MOD, maybe falkTX can.
I guess that the complete range of the display is ±49 Cent.
In my stand alone implementation, I have split the range of the bars, so that the last 10 Cent before match, get a wider range then the remaining 39 Cent.
That is visible by marks in the display.
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So if an overtone is louder than the fundamental (common with the bridge pick-up esp on bass or some reed instruments) the overtone will be tracked?
Yes
With the current implementation it is accurate until 1 cent.
Each bar represents 10 cents, so the first bar is filled when the signal is between 1-10 cents out of tune, the second bar when it is 11-20 cents out of tune, etc.
//Jesse
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@jesse
Thank you for the data. Good to know.
The visual representation gives a feeling that it may not be as accurate as it is. However, the large display is very nice and easy to see. Some tuners have a needle that moves and when it’s in the middle there is another indicator that gives a nice visual to indicate you are in tune… This has nothing to do with the actual accuracy but a good visual can help with confidence of the user.
I’m confident now that I know the accuracy…