RTTATuner 4+

Daniel Gordon

Designed for iPhone

    • 4.7 • 11 Ratings
    • $3.99

iPhone Screenshots


RTTA, short for Real Time Tuning Analysis, is an innovative way to tune instruments and to analyze and improve your intonation. With a conventional instrument tuner, you play a single note, and the tuner indicates how well in tune that one note is. For variable pitch instruments like the flute, this can be deceiving. What is needed is a way to analyse the intonation of all notes in a piece of music or scale, as performed naturally. This is exactly what the RTTA technique provides.

Now, for the first time, the RTTA technique is available to iPhone users in the form of RTTATuner. Press the record button, and play a piece of music or some scales. RTTATuner will display the tuning of each note on a graph that is updated in real time. Choose from popular musical temperaments, or input custom temperaments. Select the pitch standard, temperament transition, display options, and note filters. Analyse your performance intonation or test the intonation of particular fixed and variable pitch instruments. Results can be exported to PDF for later reference.

RTTATuner will prove useful to all kinds of musicians and instrument makers. I hope you enjoy using it; please consider providing feedback on the app store!

Credits and Thanks:

The RTTA concept was invented by flutemaker and researcher Terry McGee, and was first put into practice by Graeme Roxburgh. See also Scott Turner's Windows application, Flutini, and the Tartini software developed by Philip McLeod and others at Otago University. Thanks go to all of the above.

The RTTATuner app was designed and developed by Dan Gordon.

What’s New

Version 2.01

Minor update to fix an issue with the "export to PDF" function not being available.

Ratings and Reviews

4.7 out of 5
11 Ratings

11 Ratings

Gerwagner55 ,

A great practice tool!

For the student seriously working on their intonation, this tool is a necessity. It provides feedback over a longer period, say the length of a piece, instead of moment by moment as a meter does, This gives a huge advantage to those developing that all important relationship between the ear and the instrument. It should be in every flutist, recorder player, or ethnic flutist's tool box.

Woodfluter ,

Excellent and useful

Performs as intended, within the limitations described on McGee's website and imposed by the iPhone mic. Useful both for evaluating instrument characteristics, and also consistency of the player's intonation control.

My only gripe: on a phone, the display is very small. I wish a version for iPad had been included.

dontburnquran ,

Family shared apps keep disappearing

I purchased the app and shared with my family. It works very well on my phone and my daughter loves to leave it on to check whether she is in tune.

I am not giving it 5 stars because the app keeps disappearing from my wife’s and daugter’s phone. I hope this gets fixed soon. Otherwise, it’s excellent.

App Privacy

The developer, Daniel Gordon, has not provided details about its privacy practices and handling of data to Apple. For more information, see the developer’s privacy policy.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


  • Family Sharing

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

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