# helio-fm/helio-sequencer

Libre music sequencer for desktop and mobile platforms

Repository: https://github.com/helio-fm/helio-sequencer
Canonical: https://ross.abutalabs.com/products/helio-sequencer
Homepage: https://helio.fm
Language: C++
License: GPL-3.0
License Family: copyleft
Topics: audio-applications, music-composition, sequencer, vst, music-sequencer, composition, cross-platform, midi, music-tools, microtonal, juce
Last push: 2026-08-24T15:24:25+00:00

## Health v2 (maintenance only)
Score: 77/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 99, release rhythm 35, longevity 100
- inputs: {"age_days": 3422, "days_push": 9, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 3530, forks 141 (observed 2026-08-28T04:08:08.904048+00:00)

## What it is
Helio is a free, open-source (GPL-3.0) music sequencer built in C++ with JUCE, available for desktop and mobile platforms. It features a minimalistic, distraction-free UI and encourages experimentation with exotic scales and microtonal temperaments.

## Use cases
- compose music with a lightweight MIDI sequencer
- write music on a phone or tablet
- experiment with microtonal scales and exotic temperaments
- host VST plugins on desktop
- sketch musical ideas quickly with a distraction-free UI
- edit MIDI tracks with hotkey-driven workflows

## When to choose
- you want a free, tiny (<10 MB) portable sequencer across desktop and mobile
- you need microtonal or exotic scale support
- you prefer a minimal, keyboard-driven MIDI editing workflow

## When to avoid
- you need a full-featured DAW with recording, mixing, and extensive plugin ecosystems
- you require professional audio production features like advanced automation or surround mixing

## Facets
- artifact type: application
- maturity: active
- function: audio-processing, gui, game
- domain: media, cross-platform
- platform: windows, cpp, cross-platform
- tags: music-sequencer, midi, vst-host, microtonal, music-composition, juce, daw, audio, macos, linux, android, ios

## Member repositories
- helio-fm/helio-sequencer (main) score 77

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:08:08.904048+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T18:35:06.680668+00:00, confidence not recorded.
  - readme: https://github.com/helio-fm/helio-sequencer (fetched 2026-08-28T04:08:08.904048+00:00, sha 47d56f6d6686)
  - homepage: https://helio.fm (fetched 2026-08-29T09:29:03.005986+00:00, sha 8c048f12b7ad)
  - site_page: https://docs.helio.fm (fetched 2026-08-29T09:29:03.018769+00:00, sha 15d8a8b5fa16)
- Data as of 2026-08-30T08:39:29.467469+00:00.