Arqo.
Mobile-first screenwriting. iOS, Android, macOS, Windows — one engine across all four. Built solo, shipped today.
~10MB on macOS · ~12MB on Windows · free to download · sign in to sync
A script-led filmmaking tool for writers who carry their script on their phone, draft on a laptop in a coffee shop, and finalize on a desktop. Same engine. Same FDX. Same offline-first sync.
Tauri on desktop because Electron is a 200MB tax I'm not paying on behalf of writers. Native-grade on mobile. The paginator, FDX engine, and CRDT collab layer ship identically across all four platforms.
- Lossless FDX
- Round-trips against Final Draft and WriterDuet production fixtures. Dual dialogue, revision marks, locked scene numbers, custom transitions.
- Studio-grade pagination
- Deterministic, line-by-line, runs in a web worker. Embedded Courier 12. PDF output that opens correctly in every industry tool.
- Offline-first
- Drafts live on your device, encrypted. Sync when you have signal.
- CRDT collab
- Real-time co-writing with presence, cross-view sync, offline-tolerant merges. Yjs underneath — same kernel as @jmnpr/craft.
- Voice-tuned AI
- Embeddings against a 777-script library. Suggestions match your voice, not a generic LLM voice. Amplifies, never authors.
The studio's bet, made visible: a one-person operator with agentic-dev tooling can ship the four-platform footprint that previously required a team. Tauri for desktop — ~10MB on macOS, ~12MB on Windows. iOS and Android shipped through the stores.
Get release notes when Arqo updates.
One email per release. No drip, no upsell.