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Cloud-native writing, with versions the room can name.
Arc Studio Pro is the polished cloud editor a lot of rooms try after Google Docs — clean outlining, live comments, no desktop install. Inkwell is an Arc Studio alternative when that polish is not enough: the script is structured data, so save points, draft lines, and skill passes can read the same pages the room is arguing about.
Capability spectrum
First-class fills the bar. Partial is half. Empty is a real gap — not a muted icon you have to decode.
Named versions I can return to
Named save points (immutable snapshots)
Arc keeps revision history; Inkwell adds named save points you control.
Live co-writing
Real-time collaboration
Both support live co-writing; Inkwell layers save points and draft lines underneath.
Locked production drafts
Production workflows (locked scripts, revision colours, A-pages)
Inkwell connects locked drafts, WGA revision colours, A-pages, breakdowns, and production exports; Arc focuses on script revision comparison.
Reviewable AI in the draft
Agentic AI skill passes
Arc offers AI assistance; Inkwell runs reviewable skill passes that edit the draft in place.
Fountain-native writing
Fountain native
Inkwell is Fountain-native; Arc focuses on its own structured editor experience.
One-time or free start
Free tier
Inkwell has a permanent Free plan with the full editor. Arc's free tier is a limited script count on a subscription ladder.
Browser-first for the room
Web-based, cross-platform
First-hour path
Switching is a file you can name, not a weekend of retyping.
FDX or Fountain from the draft you mean to keep.
Create the shared project before anyone rewrites.
Read the summary. Warnings are decisions, not noise.
A save point is the rollback if the first pass fails.
Export PDF or FDX when production asks — not before.
Stay on Arc Studio Pro if you want a familiar page-first cloud editor, the outline board is the main job, and you rarely need named restore points or production lock.
Switch when the room is already fighting history — which beat-board version is canonical, which comment landed on which draft — and you want versions, diffs, and AI on structured screenplay data.
Inkwell has a permanent Free plan with the full editor. Arc's free tier is a limited script count on a subscription ladder.
Export FDX or Fountain from Arc, then import from Plot's Import / Export menu. Name a save point before you rewrite so the imported pages stay a restore point.
Not as a corkboard clone. Plot keeps structure in the screenplay itself — outline extraction, draft lines, and scene-aware diffs — rather than a second board that can drift from the pages.
