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Helium AUv3 MIDI Sequencer

Helium AUv3 MIDI Sequencer

by 4Pockets.com

55 ratings
51 reviews
📷 Photo & Video
🎵 Music
$14.99 $7.99

Lowest price: $5.99 3 years ago (-33%)

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Details

Released
April 22, 2021
Updated
November 30, 2025

Features

Developer

4Pockets.com
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About

This app is a powerful MIDI sequencer designed for music production. It allows users to create and arrange complex musical pieces with multiple tracks, extensive clip libraries, and advanced looping features. Easily organize and import MIDI data to build songs efficiently.

✓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
Show original description

What users say about Helium AUv3 MIDI Sequencer

Reviews of Helium AUv3 MIDI Sequencer are mostly positive: the Music app is rated 4.3/5 from 55 App Store ratings. What users like most: powerful MIDI sequencer, innovative features. Top complaints: randomization goes extreme, MIDI out channels not visible in AUM. Summarized from real user reviews.

Positive things

  • 👍Powerful MIDI sequencer
  • 💡Innovative features
  • 🚀Smooth workflow
  • 👍Great value for price
  • 💡Intuitive piano roll
  • 👍Well-designed UI
  • 👍Developer actively supports app
  • 💡Useful MIDI browser for previewing loops
  • 👍Works well in AUM
  • 💡Standalone MIDI file capabilities
  • 👍Easy to use for MIDI concepts
  • 💡Masterclass tutorials available
  • 👍Great for sequencing Atom
  • 👍Good for post-editing MIDI performances
  • 💡Loop/snapshot mode
  • 👍Practical within AUM
  • 💡Step recording feature
  • 👍High quality app
  • 💡Drag and drop MIDI import
  • 👍Indispensable app for iOS musicians
  • 💡Full-featured AUv3 MIDI player/recorder
  • 👍Incredible match with AUM
  • 💡Randomizer function
  • 👍Scales and key display
  • 💡MIDI auditioning before import
  • 👍Good manual and tutorials

Negative things

  • 🐛Randomization goes extreme
  • 🐛MIDI out channels not visible in AUM
  • 🐛App crashes frequently
  • 🐛Notes get stuck
  • 🐛Randomization causes crashes
  • 🐛MIDI import mixes tracks
  • 🐛Notes lag when dragging
  • 🐛Grid looks off relative to piano roll
  • 🐛Sustain pedal causes issues
  • 🐛Exported MIDI files inaccessible
  • 🐛No sound without host app
  • 🐛Swing function complicated
  • 🐛Small font on iPhone
  • 🐛Difficult to set CC levels accurately
  • 🐛Automation line width issue
  • 🐛Limited adjustment for note transposition
  • 🐛Turning off quantization not possible
  • 🐛Individual loop lengths not possible for tracks
  • 🐛Song mode does not follow host tempo
  • 🐛Inconsistent behavior with loops in song mode
  • 🐛Ghost tracks visibility limited
  • 🐛Chord track not intuitive
See all reviews

What's New in Helium AUv3 MIDI Sequencer

1.58

November 30, 2025

Fixed various potential UI issues on iOS26.1

User reviews

Most RecentHighest RatedLowest Rated

Cool

Plz. Scale key and random velocity, arpeggios patterns,
IInRate

Positive early impressions

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
RRedinho83

Cannot see midi out channels in AUM

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

Crash Crash Crash

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.
AArmeeof1

Fantastic App

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.)
Show more
TTovokas
See 46 more reviews

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User experience

🐞

Reported Bugs

12 issues

Notes get stuck

Bug

Randomization causes crashes

Bug

MIDI out channels not visible in AUM

Bug

App crashes frequently

Bug

MIDI import mixes tracks

Bug

Notes lag when dragging

Bug

Grid looks off relative to piano roll

Bug

Sustain pedal causes issues

Bug

Exported MIDI files inaccessible

Bug

Song mode does not follow host tempo

Bug

Inconsistent behavior with loops in song mode

Bug

Loop button issue on empty instance reload

Bug
✨

Requested Features

15 requests

Scale key and random velocity

Feature

Arpeggios patterns

Feature

More gradual randomization approach

Feature

Scissor tool for shortening MIDI events

Feature

Latch option for press/hold to audition MIDI sequences

Feature

Patterns view like Atom

Feature

Tutorial on using chord track

Feature

Aftertouch recording

Feature

Time stretch feature

Feature

Higher automation window setting

Feature

Turning off quantization

Feature

Individual loop lengths for tracks

Feature

More ghost tracks visible and colored

Feature

Looping sequences of different lengths (workaround exists)

Feature

MIDI channel switching controlled by AU Param

Feature

FAQ

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.