Meantone app for iPhone and iPad

Well tempered is indispensable to perform baroque music.
In these temperaments, Meantone was more important temperament than others, because of long term use.

By using this app, you can investigate a precise numerical pitch value and sound of particular temperaments they are Pythagorean, Just Intonation, and especially Meantone etc.
And you can change a key by flicking a music view, so that you will understand how each degrees pitch change in each temperaments change.

How to use as follows:

-How to operate a music view
flick a music view left or right, changing a key.
flick a music view up or down, changing a clef.

-How to sound
Tap a music view where you want. After that, if you tap same position, the sound is off.
If you want to get a semitone up, select "#" from a selector above a music view. Getting a semitone down, select "b".
Tapping "All Off" make all sound off at the same time.

-How to select temperament
Choose from a center picker.

-About pitch display
In a Hz display, a real frequency is displayed. In a cent display, it displays a cent value against a keynote of current key, or pitch A. You can select a cent standard.

-Setting of tuning, a custom temperament
Turn on info switch then moving to setting view. In Setting View, you can change a total tuning and custom temperament.

Explanations of each temperaments:
1.Equal temperament
All semitone is 100 cents. Most general temperament on modern music.
2.Pythagorean Wolf:Eb-G#
Its based on perfect fifth pitch. Accumulation gap(wolf fifth) is placed Eb-G#. Wolf fifth means a particular fifth interval that is added Pythagorean Comma to perfect fifth.
3.Pythagorean Wolf:D-A
Wolf fifth are placed D-A. In a key C, Three triad, C-E-G, F-A-C, G-B-D are almost pure.
4.Just Intonation
Twelve degrees pitch arent fixed. Each degrees pitch depends on a key. And an enharmonic pitch is different. For example, C# and Db are different pitch.
5.1/4 Syntonic Comma
General Meantone temperament. Wolf fifth is placed Eb-G#. The interval of major third are pure.
6.1/5 Syntonic Comma
A kind of meantone. Wolf fifth is placed Eb-G#. The interval of major third is little far from a pure interval.
7.1/6 Syntonic Comma
A kind of meantone. Its common on general baroque music. Wolf fifth is placed Eb-G#.
8.1/7 Syntonic Comma
A kind of meantone. Wolf fifth is placed Eb-G#. Very near to Equal temperament.
9.Werkmeister III
A kind of well tempered.
10.Kirnberger(1766)
A kind of well tempered. D-A is shorter by syntonic comma.
11.Kirnberger(1771)
A kind of well tempered. D-A, A-E are shorter by a half of syntonic comma.
12 Kirnberger(1779)
A kind of well tempered. C-G-D-A-E are same as Meantone 5th.
13 Custom
You can make your own temperament.

By the way, the icon of this app is a portrait of Monteverdi, a great baroque composer.