# Helium AUv3 MIDI Sequencer

> Lightweight AUv3 MIDI sequencer plugin for AUM with extensive clip management. (iPhone/iPad app by 4Pockets.com.)

- Source: https://appshunter.io/ios/app/helium-auv3-midi-sequencer/id1563152523 (this page in markdown: same URL + `.md`)
- Developer: [4Pockets.com](https://appshunter.io/developer/370131860)
- Category: Music, Photo & Video
- Price: $7.99 (on sale, was $14.99)
- Rating: 4.40/5 from 55 App Store ratings · 51 written reviews indexed
- Age rating: 4+
- Requires: iOS 13.0 · 84 MB
- Languages: American English
- Released: 2021-04-22
- Data updated: 2026-08-26
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/helium-auv3-midi-sequencer/id1563152523/reviews.md

## What is Helium AUv3 MIDI Sequencer?

Helium is a lightweight AUv3 MIDI sequencer plugin designed specifically for AUM. It supports up to 16 tracks of unlimited length with the ability to direct output to 16 channels on up to 16 MIDI output ports.

One of the great features is the ability to import and maintain libraries of MIDI clips using Helium's 'Media Bay'. These clips are freely available all over the internet and may contain individual chord sets, chord progressions or drum tracks. You can quickly build a song by dragging and dropping your MIDI clips from the media bay onto your timeline. You can also save your own clips directly to the media bay to create your own personal MIDI clips libraries. Long press on a clip to preview its contents using the currently selected MIDI device.

Helium now ships with a library of over 7000 MIDI clips, consisting of every chord and chord progression you could ever need.

Helium allows many different ways to import additional MIDI clip libraries. Simply drag and drop your ZIP collections directly to your PC/MAC web browser and they are automatically unpacked into the clips library folder. You can also drag and drop files between the Media Bay and the iOS Files app.

Helium supports a sync mode called 'Remote Looping'. This was something we recently introduced into our MultiTrack Recorder plugin and is very useful for breaking down the timeline into sections.  You can define up to 12 loops which can be used to specify the locations of say the intro, verse, chorus, and outro within your song, then trigger these loops seemlessly in sync with the host tempo. Once captured, these loops can then be triggered by incoming MIDI notes.

A new addition to Helium is the ability to piece together loops into songs, so you just concentrate on creating a single verse, chorus, bridge etc. and piece everything together without the headache of having to re-arrange your timeline.

Features

○ 16 Tracks per instance.
○ Includes a library of over 7000 MIDI clips.
○ Assignable MIDI channel and Bus per track.
○ Full editing of CC controllers using the controller lane.
○ Independent vertical and horizontal zooming.
○ Import & Export MIDI tracks.
○ Media Bay, organize your MIDI flips libraries.
○ Clip Preview from Media Bay
○ Drag and Drop from the Media Bay directly to the timeline.
○ Drag and Drop to Files App.
○ Remote Control with Looping advanced functionality.
○ Step Recording.
○ Build in Mixer to adjust relative track levels with Mute/Solo.
○ Sync to Host.
○ Up to 16 outputs (configurable).
○ MIDI Clip Preview
○ Ghost Note Feature
○ Multi level undo and redo.
○ Song Mode
○ Multi-Take Record

Please checkout the help manual for details on where to find my tutorial videos on Helium and where to download some fully featured and free MIDI clip libraries.

This is not recommended to use on small iPhone screen sizes such as the SE models. You can adjust the screen scaling to suite your iPhone model by long pressing the MENU button and changing the scale.

## Key features

- 16 Tracks per instance
- Over 7000 MIDI clips library
- Media Bay for organizing clips
- Remote Looping functionality
- Song Mode for arranging sections
- Full CC controller editing
- Sync to Host

## Chart rankings

- #175 in Top Paid · Music (US App Store)

## Recent user reviews (10 of 51)

All indexed reviews: https://appshunter.io/ios/app/helium-auv3-midi-sequencer/id1563152523/reviews.md

### 5/5 — Cool

*2026-07-31*

Plz. Scale key and random velocity, arpeggios patterns,

### 4/5 — Positive early impressions

*2026-06-14*

My only issue is the randomisations go a bit extreme. The jump in complexity from medium to high is a bit much. Would love a more gradual approach or something in between these

### 1/5 — Cannot see midi out channels in AUM

*2026-04-18*

Why doesn’t Heliums midi channels appear in AUM /
?

### 1/5 — Crash Crash Crash

*2026-02-21*

Nonstop crashes with this app. I am using it in AUM on an A16 iPAD with just 2 tracks of sequenced midi, each on a different port. AUM is running at ~30% CPU and it’s just crash after crash after crash. Absolutely unusable in a live setting. So disappointing. I will be purchasing Atom 2.

### 5/5 — Fantastic App

*2026-01-20*

It’s amazing to see the developer continuing to maintain and advance Helium 4 years on. 4Pockets apps basically require you to watch the tutorial vids, as the interfaces are often overstuffed with useful things. But once you figure out Helium, it’s incredibly powerful. (And I find it sad to see a 1-star review because the app is missing a niche feature… Helium provides tremendous value for its minuscule price.)

### 1/5 — No way to transpose composition to different root key

*2025-10-19*

Very disappointed that I see no way to shift a composition easily to another key… There should be a simple way to transpose all the notes together if a composer needs to

### 4/5 — Love This App

*2025-07-20*

Great midi sequencer. The only issues I have with it so far is sometimes notes get stuck, and I really wish the press/hold to audition midi sequences had a latch option since it hurts to keep holding to preview so many midi files.

### 5/5 — Love This App

*2025-07-17*

Great midi sequencer. The only issue I’ve had so far is sometimes notes get stuck. I’m using Helium in AUM on an iPad Pro 3rd Gen iOS 18.5.

### 5/5 — Thank you

*2025-02-10*

This app is brilliant with AUM. Thanks for the update the note bug
 sticking on was happening to me.

### 3/5 — Helium is gonna surpass infinity!(maybe not)

*2024-12-07*

Update-
Randomising using a scale such as mono arp, poly arp, random etc. Selecting the “random” function in the randomizing process from the menu causes the app to crash consistently. It also crashes the daw using the app.
Extremely irritating bug.

Bug Report Update- Hey Paul, there’s a consistent bug that causes crashes the project every time, while using randomisation functions, if you move over to “random” button(after mono arp, poly arp), the daw just vanishes away from the screen, then restart is the option.

Amazing work on the recent updates but didn’t wanted helium to having this irritating and fatal bug.

Do check on this.

Given that Paul, his health and mental fortitude is intact,
This app is literally going to change the game and the rules! 

No paul didn’t give it to me, bought it. Had flaws, glitches!

But the way Paul is doing things, this app is just unparalleled!

The thing is uneducated musicians won’t know the potential it offers,

Paul developed this for the ones who knows the game!

Regards!

## Frequently asked questions about Helium AUv3 MIDI Sequencer

### What does the Helium AUv3 MIDI Sequencer app do?

This app is a lightweight AUv3 MIDI sequencer plugin designed for use with AUM. It allows users to create and arrange MIDI sequences across multiple tracks, manage extensive libraries of MIDI clips, and build songs using advanced looping and arrangement features.

### What are the key features of Helium AUv3 MIDI Sequencer?

Key features include support for 16 tracks per instance, a library of over 7000 MIDI clips, a Media Bay for organizing clips, Remote Looping functionality, Song Mode for arranging song sections, full CC controller editing, and synchronization with a host application.

### How much does Helium AUv3 MIDI Sequencer cost?

The application is a paid app. There are no mentions of subscriptions or in-app purchases in the provided description, indicating a one-time purchase model.

### What devices is Helium AUv3 MIDI Sequencer compatible with?

This app is designed for iOS devices and functions as an AUv3 plugin, specifically noted for its integration with AUM. It is not recommended for small iPhone screen sizes like the SE models due to its interface, though screen scaling can be adjusted.

### How can I import MIDI clips into Helium AUv3 MIDI Sequencer?

You can import MIDI clips by dragging and dropping ZIP collections directly to your PC/MAC web browser, which will automatically unpack them into the clips library folder. You can also drag and drop files between the Media Bay and the iOS Files app.

## Version history (last 5 releases)

### 1.58 — 2025-11-30

Fixed various potential UI issues on iOS26.1

### 1.57 — 2025-11-19

1.57 200
Fixed some cosmetic rendering issues associated with iOS26.1 popover bugs.

### 1.56 — 2025-08-28

1.56 199
You can now select the current track using an AU parameter.
Added support for compatability with future versions of iOS.

### 1.55 — 2025-06-12

This version allows exporting of Aftertouch to MIDI Clips (as well as MIDI Songs).

### 1.54 — 2025-06-09

1.54 197
I now export channel aftertouch to exported MIDI files.

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All apps by 4Pockets.com: https://appshunter.io/developer/370131860

## Related topics

[helium auv3 midi sequencer](https://appshunter.io/ios/topics/helium-auv3-midi-sequencer)

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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 2026-08-26.*