A native macOS drawing app for quick sketches, screenshot markup, and AI-generated diagrams
Design DIY furniture from aluminum extrusion, resize it in 3D, and get a parts list that matches the model
Stage
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Founded
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Based in
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US
Pricing model
Freemium
Free
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.
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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
Resize designs in 3D to custom dimensions
Parts list generated from the same model data
All dimensions in metric and inches
Every part linked to US sellers
Designs checked against fit rules before listing
Part data sourced from manufacturer drawings
Designs labeled as AI draft or test-built
No account needed to browse and design
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
Parts automatically computed to fit together based on slot systems and hardware compatibility
Data sourced from manufacturer specifications rather than guesses
Cut lengths computed from design model, not estimated
Distinguishes between reference data and physically verified designs
Chalk
Slot & Shaft