sequencism vs Helio Sequencer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
sequencism
A music sketchbook tool for creating short, simple musical pieces. It offers traditional track and piano roll editors enhanced with touch-screen capabilities, plus helpful tools like chord helpers. Designed for sketching ideas, not complex productions or live performance.
- Track and piano roll editors
- MIDI instrument and AUv3 support
- Chord helper tracks
- MIDI keyboard with scale support
- Export to MIDI
- Audiobus 3 and Ableton Link support
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Description sequencism is a music sketchbook tool that allows the creation of short and simple pieces of music. It is designed to provide a traditional user interface of track and piano roll editors, while taking advantage of the touch-screen capabilities of the iPad. It also includes other helper tools, such as chord helper tracks. Note that the main goal of this app is to work as a sketchbook, thus it is not recommended to use sequencism to produce complex songs or to play songs live on stage. Features • Simple track mixer and visual mixer (volume, pan) • Multitrack editor: MIDI instrument tracks, chord helper tracks • Support for SF2* and AUv3 instruments (*lightweight SF2 files only) • AUv3 Effects support • AU MIDI support for instruments and effects • Piano roll editor: add, move, copy notes within blocks • MIDI keyboard, supports multiple scales, including user-defined scales • Support for diatonic and chromatic chords, borrowed chords (modal interchange) • Automatic transposing when changing chords or scales • Supports Audiobus 3 and Ableton Link • Support for MIDI keyboards, including Bluetooth keyboards • Export to MIDI Planned features • Undo, Redo • Automation • Import MIDI files (improve existing support) --------- AUv3 instruments requires iPad Mini 2, iPad 4 or newer. AU MIDI requires iOS 11 or newer.
Helio Sequencer
A free and open-source music sequencer designed for hobbyist composers, game developers, and indie artists. Comprehensive documentation is available to help users get started with its features.
- Open-source music sequencer
- Aimed at hobbyist composers
- Supports game developers
- For indie artists
- Includes documentation
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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
Screenshots
Verdict
The clearest difference is rating: Helio Sequencer at 4.4 against sequencism's 3.9. Helio Sequencer also leads on review sentiment (86% vs 67%) and device support (3 vs 1). sequencism's advantage is iOS requirement (9.3 vs 11.0). On price, ratings volume, update cadence and ads there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Helio Sequencer holds the better App Store score, 4.4 against 3.9. Both are backed by a comparable volume of ratings — 18 and 13 respectively. Written reviews point the same way: 67% of sequencism's written reviews are positive against 86% of Helio Sequencer's.
sequencism ships an update every 2 months, Helio Sequencer every 3 months. The most recent releases landed on June 5, 2026 and September 6, 2026 respectively.
| Parameter | sequencism | Helio Sequencer |
|---|---|---|
| Price | Free | Free |
| Rating | 3.9 (18 ratings) | 4.4 (13 ratings) — better |
| Positive reviews | 66.7% of reviews | 85.7% of reviews — better |
| Number of ratings | 18 — better | 13 |
| Update frequency | Every 2 months — better | Every 3 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPad | iPhone, iPad, iPod — better |
| Requires iOS | 9.3 — better | 11.0 |
| Further details — not scored | ||
| Size | 26 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | Rodrigo Roman | Peter Rudenko |
Customer experience
sequencism
Helio Sequencer
In-app purchases
sequencism
No in-app purchases
Helio Sequencer
No in-app purchases
