Skip to the shop floor

visualOS vs Chalk

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

visualOS compared with Chalk
DetailvisualOS logo visualOSChalk logo Chalk
What it doesA local-first infinite canvas for visual thinkers A native macOS drawing app for quick sketches, screenshot markup, and AI-generated diagrams
StageStartup Not given
Founded2026 Not given
Based inDE Not given
Pricing modelFreemium Freemium
PricingBrowser: Free. Native app for iPhone, iPad and Mac: €14.99/$12.99 at launch (regular €19.99/$19.99), one-time purchase across all three devices, no subscription. 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
  • Fully offline with no server required
  • Real folders on disk and Markdown files
  • Automatic version history with restore
  • Sync via user's own cloud folder (iCloud, Dropbox)
  • Nested folders to any depth
  • Freehand drawing with pen and color
  • Magnetic arrows for connecting elements
  • Full-text search across all folders
  • Interactive to-do lists on canvas
  • 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 server: your data never leaves your device
  • Real files you own: folders are real folders, documents are Markdown files
  • Works fully offline with no internet dependency
  • Automatic sync through your own cloud (iCloud or Dropbox)
  • Native apps for iPhone, iPad and Mac showing full canvas
  • 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
Community votes00
DR (Domain Rating by Ahrefs)5 +1 (up) since last checkNot checked yet no change since last check
Trust Flow (Majestic)30
Citation Flow (Majestic)2124
Referring domains (Majestic)1846

5 details filled in for both companies.

More alternatives to visualOS More alternatives to Chalk

Support