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

This app has been updated by Apple to use the latest Apple signing certificate.

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

2.8 out of 5
5 Ratings

5 Ratings

Somethingjane8 ,

Needs an update !!

Needs an update! Doesn’t talk to the mic on Iphone xs os12.1 ! Love the temperament selections. A small tweak would fix all this. Emailed the admin with no response!

Corbin_S ,


As someone who tunes professionally for a living, this app is a godsend for harpsichords and clavichord Tuning. Generally I tune by fork and I can do many historic temperaments that way, but with the pitch pipe on this; it is a whole new level with so many more options. Love this app! And let me just also note: the interface is so easy to use. Perfection all the way around.

Ddub007 ,

Was great...

This app worked great for me until updating to 12.1. Now, the tuner does not work. Only the pitch pipe works. I tried restarting my phone, and even reinstalling the app. Before this update, I loved how this app made tuning the harpsichord such a breeze. Setting temperaments makes the music come to life! Please update ASAP.

App Privacy

The developer, SAERS, has not provided details about its privacy practices and handling of data to Apple.

No Details Provided

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


  • Family Sharing

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

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