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.


○ 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.

What’s New

Version 1.11

Fixed an issue where MIDI Thru was not being saves with session.
Added the ability to delete a take during Multi-Take record (TAP and HOLD on take 1-8).
This version is now compatible with the iPhone as well as an iPad. (larger iPhone recommended).
There is an additional option on the iPhone to scale the screen to a desired size. (TAP and HOLD menu and use 'Scale').
This version has a new floating draggable remote loop window instead of a toolbar.

Ratings and Reviews

4.7 out of 5
7 Ratings

7 Ratings

Doctor Trey ,

The Easiest AUv3 midi Sequencer to use

This app is so well thought out. It’s so easy to move notes around, and change controller and velocity events and its AUv3. I do wish there were options for swinging eighth notes but there is a quantize to triplet feature (quintuplet and septuplet quantizing would be great as well.) Favorite feature: The media bay for sure. It’s just so easy to use. The midi chord packs that it comes with is such a beautiful thing to have for a non piano player like myself. In the end, this app contributes to my workflow and in fact simplifies it.

d27826 ,

Already a great app for midi recording IMO…

UPDATED: export feature does work. You have to look exported measures before exporting…. Maybe better to make default full exported file, with selected measures as an extra option…

Would really help to have easier to see highlight of selected notes.

Thanks for random feature, very helpful! Would be great to have independent melody and rhythm random as additional options, as additional variation options of original random generation….

Gern Blasnton ,

Fantastic! The Kind of MIDI Editing You Dream of

This Developer is a tornado of advancements and added features! Check out his catalogue!

App Privacy

The developer,, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

More By This Developer

You May Also Like