A native macOS drawing app for quick sketches, screenshot markup, and AI-generated diagrams
Stage
Not given
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Founded
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Based in
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Pricing model
Free
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
Keep the first frame intact and stitch the following subtitle slices automatically
Process and export images locally with HTML5 Canvas without uploading photos
Support for Chinese, Latin, Thai, Vietnamese and Arabic fonts
Adjust font size, text color, outline color and slice height
Film color presets including Nolan White, Wong Kar-wai Gold, Tokyo Cyan and Minimal Mono
Customizable watermark with position, opacity and font size options
Support for JPG, PNG and WebP image formats
Interface available in Chinese and English
Safe margin adjustment for subtitle positioning
2.39:1 Cinemascope canvas ready
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
No account or installation required
All image processing runs locally in your browser
Automatically stitches subtitle slices while keeping the first frame intact
Multiple film-inspired color presets for professional styling
Full customization of fonts, colors, outlines and watermarks
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
Shadow Snap
Chalk