sequle 4+

scale sequencer for midi

Jouni Erola

Designed for iPad

    • Free
    • Offers In-App Purchases

iPad Screenshots


Sequle is musical scales based sequencing app. It uses musical scales theory to produce notes for MIDI-interface.

It has six tracks with note lengths, velocities and transpose. Tracks can have invidual pattern lengths and speeds. Song mode for more melodic performances. Minor and major scale and global transpose. It can be clocked either internally or from MIDI clock.

Using scales instead of specific notes makes everything sound good and it gives you more space to just play with the sounds get inspired easily.
Use note length and velocity to create rhytmical melodies. Vary pattern length to create polyrythmic sequences.

This app works with Camera Connection kit and most of the USB->MIDI converters.

The app is free to download but it has a limited playing time. You can purchase the full version with in-app purchase option and support the development.

Any ideas/bugs/troubles, click the support website link and use the form to contact. Website address is

What’s New

Version 1.3

This app has been updated by Apple to display the Apple Watch app icon.

Fixed config screen title issue
Song defaulted to strange values if app is killed straight after start

Ratings and Reviews

MusixMonkey ,


Absolutely no reason to even try this. No midi configuration options. Horrible UI. If you’re looking for a midi sequencer, get Genome for a grid based seq, or Quantum for an analog style seq. Skip this one... insta-delete.

Developer Response ,

I'm really sorry for the disappointment.

I really would appreciate if I could discuss about the MIDI configuration scenario with users, I really don't find any need for that when using external MIDI gear. You can change the MIDI channel from the config-screen so you can set the correct MIDI channel easily. I know that is MIDI device selection is missing but I cannot find any use for it. Please contact me thru the support website if you have needs / ideas for this!

I personally think Genome and Quantum are for different kind of use. I have them both and they are great apps!

UI style is probably matter of taste, however I tried to make it really accessible and fast to use.

Sorry again if the app caused disappointment.

App Privacy

The developer, Jouni Erola, 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.

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