# Helio Sequencer — Libre music sequencer

> Free, open-source music sequencer for hobbyist composers and indie artists. (iPhone/iPad app by Peter Rudenko.)

- Source: https://appshunter.io/ios/app/helio-sequencer/id6502380900 (this page in markdown: same URL + `.md`)
- Developer: [Peter Rudenko](https://appshunter.io/developer/943796587)
- Category: Music, Utilities
- Price: Free
- Rating: 4.50/5 from 11 App Store ratings · 7 written reviews indexed
- Age rating: 4+
- Requires: iOS 11.0 · 8 MB
- Released: 2024-05-12
- Data updated: 2026-06-01
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/helio-sequencer/id6502380900/reviews.md

## What is Helio Sequencer?

Helio is a free and open-source music sequencer aimed at hobbyist composers, game developers, and indie artists. Follow the documentation to get started: https://docs.helio.fm

## Key features

- Open-source music sequencer
- Aimed at hobbyist composers
- Supports game developers
- For indie artists
- Includes documentation

## Recent user reviews (7 of 7)

All indexed reviews: https://appshunter.io/ios/app/helio-sequencer/id6502380900/reviews.md

### 5/5 — Будьте внимательны

*2025-06-17, version 3.16*

Приложение не даёт засыпать телефону, поэтому в конце сеанса выгружайте его принудительно, иначе за ночь получите минус 60-70% батареи. Разработчик написал, что «у приложения включён режим background audio, чтобы его можно было использовать с другими аудио-приложениями, поэтому система не усыпляет его автоматически».

### 2/5 — Good app, but…

*2025-05-01, version 3.15.1*

On the iPad version, there is no way to save a .helio file, despite the fact that it creates a 0kb .helio file on song creation. While customizing instruments in the orchestra pit, a lot of times when I try to add some effects, the app immediately crashes. On the page where you create projects, it has a list of projects recently worked on, but when you click on those projects, it disappears from the list, and adds an empty item to the studio menu and deletes the project with no undo.

### 4/5 — Long way to go

*2025-02-16, version 3.14.1*

Issues arise when:

Attempting to load Soundfonts for custom music production. This manifests as, often, no sound being played despite the Soundfonts being chosen and their operability. 

Returning to a project, in the form of a giant X appearing instead of any form of initialization. 

Areas for improvement can be seen when: 

Wanting to record or import sounds from external sources falling outside of MIDI. This could circumvent a reliance on Soundfonts, when fixed.

These three things would place Helio far ahead of several options available on the App Store.

### 5/5 — Pretty cool

*2025-02-05, version 3.14.1*

Aside from the crashes (probably just an issue on my end) and the few missing features, this really is an impressive piece of application. I don’t know what else to say.

### 4/5 — This deserves more attention, but one major thing

*2024-12-22, version 3.14.1*

It’s great, really good. But whenever I load a relatively small-ish sound-font (sf2, 149mb) it crashes for some reason, but this is the only HQ sound-font I could find below 200mb, pls fix it

### 5/5 — Awesome!

*2024-09-17, version 3.14*

EDIT: Dev added it! :D

Pls add background audio so it can be used alongside other audio apps.

### 4/5 — Good

*2024-07-03*

Pls add background audio so it can be used alongside other audio apps.

## Frequently asked questions about Helio Sequencer

### What is Helio Sequencer?

Helio Sequencer is a free and open-source music sequencer. It is designed for hobbyist composers, game developers, and indie artists looking to create music.

### Is Helio Sequencer free to use?

Yes, Helio Sequencer is completely free to use. It does not have any in-app purchases or advertisements, making it a truly free option for music creation.

### What devices does Helio Sequencer support?

Helio Sequencer is available for iPhone, iPad, and iPod. It is designed to run on Apple's mobile operating systems.

### How often is Helio Sequencer updated?

The latest version, 3.17, was released on November 2, 2025. While specific update frequency isn't detailed, this indicates ongoing development and support for the application.

### What is the age rating for Helio Sequencer?

Helio Sequencer has an age rating of 4+. This suggests it is suitable for a wide range of users, including younger individuals interested in music creation.

### Where can I find documentation for Helio Sequencer?

You can find comprehensive documentation for Helio Sequencer at https://docs.helio.fm. This resource is designed to help users get started and learn how to use the sequencer effectively.

### What kind of music can I create with Helio Sequencer?

Helio Sequencer is a versatile tool suitable for various music creation needs, including hobbyist compositions, soundtracks for game development, and general indie artist projects.

### Does Helio Sequencer have ads?

No, Helio Sequencer does not contain advertisements. As a free and open-source application, it is designed to be ad-free for an uninterrupted user experience.

## Version history (last 5 releases)

### 3.17 — 2025-11-02

- Enabled all screen orientations on iPads
 - Added an option to render to OGG format
 - Added more translations
 - QoL fixes for the velocity editor and the chord tool
 - Fixed note naming issues
 - UI performance improvements

### 3.16 — 2025-05-21

- Optimized UI performance, the app should now feel noticeably faster, especially on older devices
 - Transposing an entire project via project refactoring menu now also updates all key signatures
 - New projects are always created in the app's documents folder to avoid confusion
 - Fixed parametric modifiers not updating when the harmonic context changes

### 3.15.2 — 2025-05-01

- Fixed crashes on adding AudioUnit effects to instruments
 - Added x1.25 UI scaling option in settings
 - Added next/previous preset buttons in the key/time signature dialogs, and in the SoundFont player's program selector
 - Revised the built-in scales list

### 3.15.1 — 2025-04-23

- Made dialog boxes fit better on small screens
 - Follow-up regression fixes for v3.15

### 3.15 — 2025-04-18

- Fixed various crashes
 - Added an option to display note names in either German or Fixed Do notation (C-D-E or Do-Re-Mi)
 - Flats/sharps are now displayed as icons, not ASCII symbols
 - Added two colour schemes with higher contrast
 - More QoL fixes and tidying up the UI

## Apps similar to Helio Sequencer

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [DimChorus](https://appshunter.io/ios/app/dimchorus/id6743229137) | 5.0 (4) | Free | Music |
| [Helium AUv3 MIDI Sequencer](https://appshunter.io/ios/app/helium-auv3-midi-sequencer/id1563152523) | 4.4 (49) | $8.99 | Music |
| [FakeTake](https://appshunter.io/ios/app/faketake/id6743768308) | 5.0 (3) | Free | Music |

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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 2026-06-01.*