# sequle — scale sequencer for midi

> Musical scales-based MIDI sequencer app with multi-track sequencing and song mode. (iPhone/iPad app by Jouni Erola.)

- Source: https://appshunter.io/ios/app/sequle/id1313318732 (this page in markdown: same URL + `.md`)
- Developer: [Jouni Erola](https://appshunter.io/developer/295758397)
- Category: Music, Music
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 9.0 · 5 MB
- Languages: English
- Released: 2017-12-20
- Data updated: 2026-06-10
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/sequle/id1313318732/reviews.md

## What is sequle?

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 http://mii.tuu.fi

## Key features

- Musical scales-based note generation
- Six tracks with adjustable note lengths and velocities
- Individual pattern lengths and speeds per track
- Song mode for melodic performances
- Internal and MIDI clock syncing
- Support for Camera Connection kit and USB-MIDI converters

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Full features | $4.99 | one-time |


## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/sequle/id1313318732/reviews.md

### 1/5 — Horrible

*2017-12-21*

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.

## Frequently asked questions about sequle

### What is sequle?

Sequle is a musical scales-based sequencing app that generates MIDI notes. It helps users create sequences that sound good by utilizing musical scales theory, offering six tracks with adjustable parameters and song mode for performances.

### Does sequle have ads?

No, sequle does not contain advertisements. The app is free to download and offers a full version through an in-app purchase.

### What devices does sequle support?

Sequle is designed for iPad devices. It requires iOS 10.0 or later and is compatible with the Camera Connection kit and most USB-to-MIDI converters.

### How does sequle use musical scales?

Sequle uses musical scales theory to generate notes, ensuring that all produced notes are harmonically compatible. This approach simplifies the creation of pleasing melodies and allows users to focus on sound and rhythm rather than specific note choices.

### Can I sync sequle with other gear?

Yes, sequle can be clocked either internally or externally via MIDI clock. This allows for synchronization with other MIDI-compatible hardware or software, integrating it into a larger setup.

### What is the full version of sequle?

The full version of sequle removes the limited playing time present in the free version. It can be unlocked via an in-app purchase, which also supports the continued development of the application.

### How often is sequle updated?

Sequle was last updated to version 1.3 on December 31, 2017. While updates have not been frequent recently, users can report bugs or suggest ideas through the support website link provided.

### What age rating does sequle have?

Sequle has an age rating of 4+. This indicates it is suitable for children and does not contain content typically deemed inappropriate for younger audiences.

## Version history (last 3 releases)

### 1.3 — 2017-12-31

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

### 1.2 — 2017-12-28

- Fixed crash at startup
- Clear song now resets track length
- Fixed external sync play start "choking" (first notes were a bit delayed)

### 1.0 — 2017-12-20

No release notes.

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All apps by Jouni Erola: https://appshunter.io/developer/295758397

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-10.*