Helio Sequencer vs ATTACK
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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
ATTACK
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ATTACK is a noise generator built for pressure, feedback and broken rhythm. Punch the footswitch for a wall of white noise. Hold it for momentary bursts, or latch it and shape the signal with three brutal effects. Record a sample, loop it back, and build a damaged little system that keeps moving. R.I.P. — frequency sweep filter. Push the noise from low weight to high-edge bite. GUTS — bit crusher. Break the signal into unstable digital fragments and glitches. SCREAM — feedback. Send the noise back into itself and let it start to fight. SPLICE — slice and disrupt the noise signal. KICK — an independent low kick drum, kept clear of the noise effects. SAMPLE — record and loop a sound directly from your phone. SHAKE — shake the phone to activate the effects and throw their controls into aggressive random motion. No accounts. No ads. No tracking. Just noise.
Screenshots
Verdict
The clearest difference is update cadence: ATTACK at every 2 weeks against Helio Sequencer's every 3 months. Helio Sequencer's advantage is device support (3 vs 1) and iOS requirement (11.0 vs 18.0). On price, ads and in-app purchases 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 ships an update every 3 months, ATTACK every 2 weeks. The most recent releases landed on November 4, 2026 and October 31, 2026 respectively.
| Parameter | Helio Sequencer | ATTACK |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (13 ratings) — better | — |
| Positive reviews | 85.7% of reviews | — |
| Number of ratings | 13 — better | — |
| Update frequency | Every 3 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 11.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 7 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | Peter Rudenko | Aliaksandr Haurylau |
In-app purchases
Helio Sequencer
No in-app purchases
ATTACK
No in-app purchases
