sequencism vs NebulizerAU
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.
NebulizerAU
This audio effect plugin emulates the sound of an old-school, warbly tape delay. It functions as an AUv3 effect, allowing it to be used on multiple tracks within various audio applications. It delivers a distinct lo-fi sound.
- AUv3 effect plugin
- Tape delay emulation
- Lo-fi sound character
- Stackable on multiple tracks
- Compatible with GarageBand, AUM
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Old school warbly malfunctioning tape delay Nebulizer comes echoing back from the IAA doldrums. But fear not. Even though it's now an AUv3 effect plugin, ready to stack up on multiple tracks in GarageBand, AUM or your favourite audio application, it's still the wayward lo-fi monstrosity you used to know. And if you didn't know it, isn't it about time you did? Nebulizer is totally free. No ads, no in-app purchases, no subscriptions, no surveillance, no nag screens. If you want premium features, this is not the app for you.
Screenshots
Verdict
The clearest difference is rating: NebulizerAU at 5.0 against sequencism's 3.9. NebulizerAU also leads on update cadence (daily vs every 2 months) and device support (3 vs 1). sequencism's advantage is ratings volume (18 vs 3) and iOS requirement (9.3 vs 15.0). On price, ads, in-app purchases and monetization model 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.
NebulizerAU holds the better App Store score, 5.0 against 3.9. That said, the two scores are not equally well evidenced: sequencism has 18 ratings behind it against 3, so its average is the more settled of the two.
sequencism ships an update every 2 months, NebulizerAU daily. The most recent releases landed on October 10, 2026 and October 1, 2026 respectively.
| Parameter | sequencism | NebulizerAU |
|---|---|---|
| Price | Free | Free |
| Rating | 3.9 (18 ratings) | 5.0 (3 ratings) — better |
| Positive reviews | 66.7% of reviews | — |
| Number of ratings | 18 — better | 3 |
| Update frequency | Every 2 months | Daily — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPad | iPhone, iPad, iPod — better |
| Requires iOS | 9.3 — better | 15.0 |
| Further details — not scored | ||
| Size | 26 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Rodrigo Roman | Matthew Caldwell |
Customer experience
sequencism
NebulizerAU
In-app purchases
sequencism
No in-app purchases
NebulizerAU
No in-app purchases









