Key Features

  • Encyclopedia of 432 scales (harmonic, melodic, diminished, hexatonic, whole tone, augmented, double harmonic, altered pentatonic, messiaen modes, indian raga & mela, arabic maqam), which can be transposed in any desired key (about 5,200 total scales incl. transposition!)
  • Search scales that fit certain chords
  • Search chords that fit certain scales
  • Theoretical and practical usage for any musical instrument
  • Easy visual representation of scales
available ios


For more than 2000 years history has known quite a few cultures, the rise and fall of civilizations. Many of them left their mark on the ethnic group. This app combines Arabic, Indian, Chinese, Japanese, European and other world scales in a large encyclopedia of scales. All scales are presented in diatonic.

This encyclopedia is a must have for every musician. Many musicians are wondering, what chords can be played over different scales. Thanks to this app you'll able to find scales that fit certain chords, and vice versa. This feature is especially useful for improvisations. You can also see what other chords fits your chosen scale.

It is hard to imagine a musician who does not use the scales and chords! Analyze every big name in the world, and you will see that scales and chords are the basis for his creativity!

This encyclopedia is designed for musicians and theorists, composers, professionals and beginners.


Other Features:

  • Accompaniment feature: you can see and listen to the chords that fit currently selected Scale. This feature can be switched off when it is unnecessary
  • Six selectable timbres of accompaniment plus adjustable chorus effect
  • Play piano keyboard on the screen with your fingers
  • Piano keyboard is easily movable and resizable with your fingers
  • Lock to Scale function. It enables you to play only those notes, which belong to currently selected Scale on the piano keyboard. This is useful to play a melody on keyboard or to quickly listen to selected Mode or Scale
  • Transpose to any desired key by tapping Transpose button (T) and dragging notes with your finger along the piano keyboard
  • Ability to change playback tempo for training
  • Ability to adjust a volume balance between accompaniment and piano sounds
  • Note names are displayed inside the playback cursor
  • Sharps and flats signatures correspond to the current scale's key
  • Note degree feature allows to see current note's scale degree
  • Manual step by step note playback in both directions
  • Stereo high-quality sound engine for listening in headphones

All Fonexsis apps are supported by free updates! available ios


+2 #3 Fonexsis 2021-03-01 00:06
Quoting Lorenzo:
Why can't I find the Piano Apps on the App store?

I only see bass and guitar apps from your company on the App Store!

The Apple company has been withdrawing our applications from sale for a long time, saying that they are the same. Apparently they don't have art professionals. They absolutely do not care who makes the programs - a child or a professor! We corresponded on other apps - to no avail. To be fair, they recently lowered the tax, maybe now we can find an inexpensive programmer and change something. Thank you for your interest in Fonexsis!
+1 #2 Lorenzo 2021-02-28 20:51
Why can't I find the Piano Apps on the App store?

I only see bass and guitar apps from your company on the App Store!
+573 #1 Myroslav Taranik 2017-07-23 14:16
Hi guys ! Thanks a lot for the application! Very convenient, easy to use, very comfortable and interesting! Awesome . Best regards, Myroslav .

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