Well Tempered is a chromatic instrument tuner, pitch pipe and tuning fork
using your iPhone or iPads speaker and microphone, or an external microphone.

Well Tempered features 268 unique temperaments that you can customize to start with any of 12 notes, totalling 3205 unique tunings!

You can define a precise reference frequency, such as A = 417.32 Hz, making Well Tempered a favourite among instrument makers.

With all these tuning options, Well Tempered provides a keyboard so that you can play with the tuning right away to decide if this is the tuning you want for the music you will play on your instrument.

Control the tuner through your Apple Watch

Made by musicians, for musicians with input from musicians

What's New

Version 2.1

More historical temperaments added, some temperaments corrected

Add octaves to keyboard

Sound when using the keyboard is now more pleasing

The tuner is now more sensitive


The app is now smaller on your iPhone or iPad

Supports URL scheme temperament://[temperament name]

Ratings and Reviews

Doesn't appear to work with iPod Touch software version 4

Gunther Spass

This application is fabulous conceptually. I'm a viola da gamba player and having access to temperament tunings and A-415 is great. The corresponding stand alone tuner with temperaments costs about $200. It also comes highly recommended by some noteworthy professional gamba players. Like one of them says "tune by EAR not by EYE."

However, two caveats. The volume is a little soft for real use. Having some amplification is necessary to make it loud enough to tune. This is fixable with a separate amplifier/speakers. Worse though is that this software which worked just fine under OS Version 3 doesn't produce sound on my iTouch under Version 4. It would be nice if it were upgraded because it's basically non-functional in its current state. Too bad - it was a nice app.

Terrible! What a rip-off!


This is a joke! It does not give you the difference between sharps and flats in the scales, for the comparison purposes, and the tone quality is cheap and distorted. Actually, the entire design of this application is cheap and overly simplistic. When dealing with different temperaments, you must consider all flats, sharps, double-flats, and double-sharps within each system scale, even for comparison purposes. I don't understand why on earth there is not a single professional music app in the world! Are we becoming culture-less in today's society?

Well Executed


The developer fixed the previous problem with meantone, and added a few new features as well. This app is based on a great concept, and just gets better and better. A must-have for anyone who owns an instrument at home and wants to experience the joys of historical temperaments.


Niklas Saers
56.2 MB
Requires iOS 8.0 or later. Compatible with iPhone, iPad, and iPod touch.
English, French, German, Italian, Japanese, Korean, Russian, Simplified Chinese, Spanish
Age Rating
Rated 4+
© SAERS, 2009-2015


  • Family Sharing

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

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