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Lastslate

lastslate.com

From $10/mo Free plan WindowsmacOS
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Spec score 8.9 #3 of 27 in AI Script Writing Software

What it is

Lastslate is a screenplay editor for macOS and Windows with an AI collaborator that reads scripts but does not write dialogue. As a writer types, the editor identifies elements such as sluglines, character cues and dialogue, and saves automatically. It supports Final Draft FDX, Fountain, plain text and PDF, and can turn PDF screenplays into editable scenes. The Beat Board links story beats to script scenes and is included on every plan; Pro adds reference images to beats. Built-in tools derive cast lists, location and prop breakdowns, loglines and one-sheets from a script. Browser review links let recipients comment on script lines without an account, while Pro allows up to 10 writers to co-write one script live. Scripts are stored locally by default, and optional cloud backup is encrypted in transit and at rest. AI actions send the relevant excerpt, prompt and session context to the AI provider for that request. The free plan includes the full editor, Beat Board, PDF and FDX export, 10 cloud projects and limited AI collaboration. Pro costs $15 a month; Pro+ costs $45 a month.

Spec sheet

What it does
Lastslate is a screenplay editor for Mac and Windows with an AI collaborator that analyzes scripts without writing dialogue.Read 14 Oct 2026 · lastslate.com
Product
Lastslate is a screenplay editor for Mac and Windows with an AI collaborator that reads scripts and does not write dialogue.Read 29 Sep 2026 · lastslate.com
Free plan
YesRead 21 Sep 2026 · lastslate.com
Paid from
15Read 21 Sep 2026 · lastslate.com
Privacy
Scripts are stored locally by default, cloud backup is opt-in and encrypted in transit and at rest, and the company says it does not use scripts, prompts, or completions to train AI models.Read 29 Sep 2026 · lastslate.com
Maker
The privacy policy identifies Uniqlabs LLC as the publisher of the Lastslate application.Read 29 Sep 2026 · lastslate.com
AI account options
Paid plan users can connect their own Claude, OpenAI, or Gemini account or a model running on their computer, with the key stored in the computer's keychain.Read 29 Sep 2026 · lastslate.com
AI collaborator
The collaborator can read as a First Reader, Showrunner, Script Editor or Staff Writer, identify story issues and map arcs, but does not draft screenplay text.Read 14 Oct 2026 · lastslate.com
AI data sharing
When a user invokes an AI action, the relevant script excerpt, prompt, and session conversation context are sent to the AI provider for that request.Read 29 Sep 2026 · lastslate.com
AI design rationale
A June 2, 2026 company article says the product intentionally restricts AI to reading and analysis rather than generating screenplay pages.Read 14 Oct 2026 · lastslate.com
AI integrations
Paid users can connect Claude, OpenAI, Gemini or a model running on their own computer; provider billing applies to those external accounts.Read 14 Oct 2026 · lastslate.com
AI limitation
The terms warn that AI output may be wrong, misleading or unsuitable and must be reviewed by the user.Read 14 Oct 2026 · lastslate.com
AI training policy
Uniqlabs says it does not use scripts, prompts or completions to train models and contracts providers that prohibit such training.Read 14 Oct 2026 · lastslate.com
Analytics controls
Anonymous usage events and crash diagnostics exclude screenplay text and can be disabled in the app settings.Read 14 Oct 2026 · lastslate.com
Backup limitation
The terms make users responsible for their own backups and say cloud backup is only a convenience, not a replacement for backup strategy.Read 14 Oct 2026 · lastslate.com
Beat Board
The Beat Board stores story beats, links them to scenes and is available on every plan; Pro adds reference images.Read 14 Oct 2026 · lastslate.com
Cloud security
Opt-in cloud backups are encrypted in transit with TLS 1.2 or higher and encrypted at rest.Read 14 Oct 2026 · lastslate.com
Co-writing
Pro supports live editing by up to 10 writers in one screenplay with visible cursors and keystrokes.Read 14 Oct 2026 · lastslate.com
Companion Mode
Companion Mode watches files created in Final Draft, Fade In, Highland, Fountain, plain text or PDF editors and answers questions without modifying those files.Read 14 Oct 2026 · lastslate.com
Company legal name
The application and privacy policy identify Uniqlabs LLC as the publisher and company.Read 14 Oct 2026 · lastslate.com
Drafts
Named parallel drafts let writers create alternate versions and return to earlier versions without overwriting the main draft.Read 14 Oct 2026 · lastslate.com
File formats
The app imports and exports Final Draft FDX, reads and writes Fountain and plain text, and imports PDF screenplays into editable scenes.Read 14 Oct 2026 · lastslate.com
Final Draft compatibility
Lastslate says title pages, dual dialogue and revision colours survive FDX round trips and pagination matches Final Draft using Courier Prime 12-point and 54 lines per page.Read 14 Oct 2026 · lastslate.com
Format as you type
The editor detects sluglines, character cues and dialogue as you type and saves automatically.Read 14 Oct 2026 · lastslate.com
Formatting
The editor detects screenplay elements such as sluglines, character cues, and dialogue as the writer types and saves automatically.Read 29 Sep 2026 · lastslate.com
Installer security
The Windows installer is code-signed through Microsoft Trusted Signing and updates itself automatically; the Mac app is notarized by Apple.Read 14 Oct 2026 · lastslate.com
License terms
Uniqlabs grants a personal, non-exclusive, non-transferable, revocable license and prohibits redistribution, reverse engineering and competing use.Read 14 Oct 2026 · lastslate.com
Local-first storage
Scripts, drafts, version history and preferences remain on local disk unless the user enables cloud backup.Read 14 Oct 2026 · lastslate.com
Mac support
The macOS app requires macOS 12 or later, supports Apple Silicon and Intel, and is notarized by Apple.Read 29 Sep 2026 · lastslate.com
macOS requirements
The Mac app requires macOS 12 or later and runs natively on Apple Silicon and Intel Macs as a universal binary.Read 14 Oct 2026 · lastslate.com
Real-time collaboration
YesRead 21 Sep 2026 · lastslate.com
Refund limitation
Subscriptions are generally non-refundable except where legally required; cancellation takes effect at the end of the paid period.Read 14 Oct 2026 · lastslate.com
Review links
A shared draft link lets people comment on screenplay lines in a browser without creating an account, with replies tied to that draft.Read 14 Oct 2026 · lastslate.com
Script skills
Built-in slash skills produce cast lists, location breakdowns, prop breakdowns, loglines and one-sheets from the screenplay.Read 14 Oct 2026 · lastslate.com
Script templates
Templates cover feature films, half-hour comedy, hour-long drama and vertical short-series episodes.Read 14 Oct 2026 · lastslate.com
Script tools
Built-in skills include cast lists, location and prop breakdowns, loglines, and one-sheets derived from the script.Read 29 Sep 2026 · lastslate.com
Story planning
The Beat Board links story beats to script scenes and is included on every plan; Pro adds reference images on beats.Read 29 Sep 2026 · lastslate.com
Subprocessors
The privacy policy names Cloudflare, Supabase, a payment processor, AI providers, PostHog and Sentry as service providers.Read 14 Oct 2026 · lastslate.com
Support contact
Privacy requests and notices can be sent to the email address published in the privacy policy.Read 14 Oct 2026 · lastslate.com
Windows launch
Lastslate announced Windows support on August 30, 2026, shipping the same editor and version alongside Mac.Read 14 Oct 2026 · lastslate.com
Windows requirements
The Windows app supports 64-bit Windows 10 and Windows 11.Read 14 Oct 2026 · lastslate.com
Windows support
The Windows app supports Windows 10 and 11 (64-bit), uses a code-signed installer, and updates automatically.Read 29 Sep 2026 · lastslate.com

Plans and prices

Free Free full editor · PDF and Final Draft export · Beat Board · 10 cloud projects · 30-day version history · limited AI questions Read 14 Oct 2026 · lastslate.com
Pro $15 a month Month-to-month $15 AI usage included each billing cycle · Unlimited cloud projects · Unlimited version history · Up to 10 writers in one script Read 21 Sep 2026 · lastslate.com
Pro+ $45 a month $450 USD/year annual option three times Pro AI allowance · unlimited cloud projects and version history · live co-writing Read 14 Oct 2026 · lastslate.com
Student Pro $10 a month $100 USD/year; US and Canada students with school email Pro plan access · school email required Read 14 Oct 2026 · lastslate.com
Individual (Pro) $15 a month Billed monthly; $150 USD/year annual option; 7-day free trial more AI questions · strongest AI models · logline-to-outline · review links · unlimited cloud projects and version history · live co-writing · usage-based AI beyond allowance Read 14 Oct 2026 · lastslate.com
Individual (Pro), annual $150 a year $150 USD / year Extended AI collaborator limits · Advanced models · AI scaffolding · Review links · Unlimited cloud projects and version history · Real-time co-writing · Usage-based pricing available Read 29 Sep 2026 · lastslate.com

Every Lastslate plan and price →

Strong points and limits

Strong points

  • Automatically detects screenplay elements while typing.
  • Imports and exports PDF, FDX, Fountain and plain text.
  • Beat Board is included on every plan.
  • Scripts stay local by default.
  • Free plan includes 10 cloud projects.

Limits

  • AI collaborator does not write dialogue.
  • AI actions send excerpts, prompts and session context to the provider.
  • Pro costs $15 a month.
  • macOS requires version 12 or later.

Who it suits

Lastslate suits screenplay writers who want dedicated formatting, story planning and script-derived tools on Mac or Windows. Writers who collaborate can use browser review links, and Pro supports live co-writing for up to 10 writers.

Verdict

Lastslate pairs screenplay formatting and planning tools with an AI reader and collaboration options. Its free plan covers core editing, while paid plans add expanded AI and co-writing capabilities.

Where Specifiction places it

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