Web-based, cross-platform
- Inkwell
- Arc Studio Pro
Cloud-native screenwriting, compared to a screenwriting IDE.
Arc Studio Pro earned attention for a polished, web-first screenwriting experience — fast collaboration, a modern interface, and a workflow that feels closer to how teams write today than legacy desktop tools. Inkwell shares that cloud-native DNA but adds structured version control, semantic diffs, and agentic AI skills on top of the document model. Here is an honest side-by-side.
Credit where the competitor is genuinely strong
Fair comparisons build trust — we say this upfront
Where the IDE model changes the workflow
Structured data, save points, and reviewable skills
Named save points and scene-aware diffs — see what changed between table read and rewrite, not just that something changed.
A side-by-side look at where each tool stands today. Some Inkwell features are in active development — see the roadmap for current status.
Both support live co-writing; Inkwell layers save points and draft lines underneath.
Inkwell is Fountain-native; Arc focuses on its own structured editor experience.
Arc keeps revision history; Inkwell adds named, content-addressable save points you control.
Arc compares revisions; Inkwell diffs the structured document, not just text.
Arc offers AI assistance; Inkwell runs reviewable skill passes that edit the draft in place.
Inkwell production workflows are on the Pro roadmap; Arc focuses on script revision comparison rather than structured draft-line versioning.
Both are cloud-first; neither replaces a fully offline desktop workflow today.
| Capability | Inkwell | Arc Studio Pro |
|---|---|---|
| Web-based, cross-platform | ||
| Real-time collaborationBoth support live co-writing; Inkwell layers save points and draft lines underneath. | ||
| Modern cloud-native UX | ||
| Fountain nativeInkwell is Fountain-native; Arc focuses on its own structured editor experience. | ||
| Version control with draft lines | ||
| Named save points (immutable snapshots)Arc keeps revision history; Inkwell adds named, content-addressable save points you control. | ||
| Semantic change tracking (scene/dialogue-level diffs)Arc compares revisions; Inkwell diffs the structured document, not just text. | ||
| Agentic AI skill passesArc offers AI assistance; Inkwell runs reviewable skill passes that edit the draft in place. | ||
| Inline AI edit (Cmd+K) and command palette | ||
| Production workflows (locked scripts, revision colours, A-pages)Inkwell production workflows are on the Pro roadmap; Arc focuses on script revision comparison rather than structured draft-line versioning. | ||
| FDX import / export | ||
| Offline / local-first editingBoth are cloud-first; neither replaces a fully offline desktop workflow today. |
You want a polished cloud-native editor with low switching friction, strong real-time collaboration, and a familiar page-first workflow — without rebuilding how your room thinks about versions.
Your team needs named save points, draft lines, semantic diffs, and AI skill passes on structured screenplay data — plus WGA production tooling when the script locks.
The Free plan includes the full editor and AI skill passes.