Musical Scales


Create Limitless Scales

ScaleGen – the ultimate scale generator and editor

You think you know what a scale is – think again. In ScaleGen you can do all that you would traditionally imagine when it comes to scales and pitch organisation, and then much, much more.

This is the perfect tool for experimental composers in any genre as well as for musicians who want to explore new ways of thinking about music. The educational aspects of how pitches can be organised makes ScaleGen a must have for serious music students. But the directness of the app makes the learning both fun and artistically developing.

Define or change scales in the most detailed and intricate way. Audition the scales you make from within the app or export it as a MIDI file or use our iOS app Gestrument to try them out.

This is the tool for anyone who wants to go beyond the traditional tonalities in whichever genre you choose. ScaleGen comes with predefined scales of all kinds – from the traditional Western scales and early music scales to Asian scales from India, Indonesia and elsewhere. We have also included more conceptual scales based in the classical contemporary music.

Explore new palettes

ScaleGen is an extremely powerful tool both for creation and for research. In ScaleGen you can generate scales in several ways as well as import MIDI files to use as the base for a scale. You can then fine tune every individual pitch in your scale and use a number of tools to shape the contour of your scale to use it later as a scale, pitch material or as an actual melody in your music. These tools include traditional compositional techniques like inversion and retrograde (reverse) as well as stretching and different types of randomization tools.

Audition the scales you make from within the app with our built in sounds or by controlling your favourite synth through MIDI. You can also export your scale as a MIDI or text file or use our iOS app Gestrument to try out the scale you’ve made.

Many composers have developed their own tools to deal with scales and pitch organisation, but this might be the first attempt to make a fully functional scale generator and editor for professionals as a commercial software.

ScaleGen is developed by established contemporary composer Jesper Nordin who has recently had huge success with the iOS app Gestrument, based on his personal composition technique. It is designed and coded by composer and software designer Jonatan Liljedahl who has developed many high profile iOS apps like Sector, ScoreCleaner, AudioShare, NordBeat, Yellofier and many more.


Bundled scales from many different genres

The long list of scales in ScaleGen includes Western scales, Early Music scales and several Raga, Maquam and Gamelan scales with precise intonation as well as some examples on what you can do with a scale that has a different cycle than an octave or a different direction than the usual scale.


Generate Scales in one of four ways

• with the tuneable and resizable Keyboard
• by multiplying or dividing frequencies
• by defining any number of individual steps and step lengths
• by importing a MIDI file


Use the tools to edit your scale

AUDITION lets you preview the scale with multitouch
SELECT lets you select and edit part or all of your scale with tools like Inverse, Reverse, Randomize and so on
EDIT lets you change or retune individual pitches in the scale
DRAW lets you change the curve of your scale without changing pitch content



ScaleGen lets you import and export your scales as text, .scale or MIDI files to other apps and programs. The audition feature sends MIDI out so you can control your favorite external apps or synths.


Read more about the team

InventorJesper Nordin is a contemporary classical composer working with orchestras, ensembles and soloists around the world.
Software designerJonatan Liljedahl ( is a composer and software designer behind apps like AudioShare, Sector, BitWiz and the AUFX series.
Marketing manager & ProducerEmelie Bergbohm is a freelance producer, agent and marketing manager within the performing arts.
Preset & web developerJonas Kjellberg ( is a composer and software designer who recently finished his Master in Composition at the Royal College of Music in Stockholm.

ScaleGen was developed with support from Kulturbryggan



  • ScaleGen is so spectacular it’s tripping me out right now. ★★★★★
    This is a must-have app for anyone interested in scales and tunings. ★★★★★
    Although we are just scratching the surface of this amazing app, I believe the potential for creative exploration to be rather close to infinite. ★★★★★
    Awesome creative tool, makes Gestrument even better ★★★★★

    App Store Reviews
  • “A brilliant scale generator from Jesper Nordin”

    Click to read full review

    iOS MARS Review
  • “Getting started with ScaleGen”

    Click to read full 3rd party guide

    Apptronica User Guide
  • “ScaleGen review – the iOS app where you can invent your own musical scales”

    Click here to read full review

    Music App Blog