A native macOS drawing app for quick sketches, screenshot markup, and AI-generated diagrams
Book formatting software for self-publishers
Stage
Not given
Not given
Founded
Not given
Not given
Based in
Not given
DE
Pricing model
Freemium
Paid
Pricing
Free: $0 forever, includes all drawing tools, unlimited sketches in one folder, copy to clipboard as PNG, and auto-save with local-first storage. Pro: coming soon.
One-time purchase price to be announced before launch. Without a license, the software works with basic features indefinitely but exports carry a watermark.
Key features
Instant copy-to-clipboard as PNG
No accounts or setup required
Local-first storage with auto-save
Screenshot annotation with arrows, boxes, text, and freehand tools
AI diagram generation via Claude, Cursor, Windsurf, and VS Code
Refine diagrams through chat
Paste screenshot from clipboard
Unlimited sketches in one folder
Native macOS performance
All drawing tools included in free version
Supports Windows, macOS and Linux
Accepts Word and Markdown manuscripts
Generates print-ready PDF for KDP and IngramSpark
Creates EPUB 3 for ebook stores
Automatic layout of running heads and chapter openers
Professional typography with correct quotation marks and dashes
German language typography support
Works offline without requiring an account
Custom theme saving in licensed version
What makes it different
Zero-friction design: open, draw, and share in seconds with no setup or accounts
Local-first architecture: all sketches stay on your Mac, nothing leaves unless you ask
AI integration runs through your own subscription with no proxying of prompts
Runs natively on Windows, macOS and Linux while the best-known alternative only runs on Mac
Professional typography handling for both English and German
Offline desktop app with no account or cloud dependency required
One-time purchase model instead of subscription
Includes free tools for KDP formatting and quote/dash fixing
Chalk
Kernsetzer