Core Plan: $19/month (200,000 words of editing per month, limited rewriting ability). Pro Plan: $29/month (300,000 words of editing per month, able to rewrite entire chapters and books). A one-time free word sample is available for new accounts.
Key features
Remembers people and past context
Grammarly-class proofreading
Bring your own API key or run local model
Ghost text suggestions as you type
Two gestures to access all functions
Shows receipts for each reply
Memory stays on your Mac
Supports Anthropic, OpenAI, Google Gemini and Ollama
Custom actions with personalized shortcuts
Sentence-level literary feedback
Paragraph-level literary feedback
Passage-level literary feedback in context
Chapter-level literary feedback in context
Book-level literary feedback in entire context
One-click text rewriting with AI
Entire chapter rewriting on Pro Plan
Entire book rewriting on Pro Plan
300,000-word context window on Pro Plan
Progressive learning through interactive Q&A
What makes it different
Memory that crosses conversations and apps
Shows receipts explaining how each reply was generated
Minimal resource usage as small native macOS app
No account, analytics or tracking required
Human book editors charge thousands but AI Book Editor starts at $19 per month
Gives almost immediate feedback while human editors take weeks
300,000-word context window three times more than average novel
All output belongs 100% to the user for commercial use