A native macOS drawing app for quick sketches, screenshot markup, and AI-generated diagrams
Stage
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Pricing model
Freemium
Freemium
Pricing
Not given
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.
Key features
Generate unique professional signatures from text prompts with various styles
Extract handwritten signatures from photos with AI precision
Remove backgrounds from signature images for transparent PNG files
Create professional PNG signatures ready for immediate use
Sign PDF documents online with secure browser-based solution
Create multiple different signatures
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
What makes it different
Sophisticated AI models that craft genuinely unique signatures capturing natural handwriting flow
Text-prompt based signature editing for intuitive modifications
Intelligent extraction and enhancement of authentic handwritten signatures
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
Chalk