Skip to the shop floor

Chalk vs Photostar

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

Chalk compared with Photostar
DetailChalk logo ChalkPhotostar logo Photostar
What it doesA native macOS drawing app for quick sketches, screenshot markup, and AI-generated diagrams Free online Photoshop alternative for photos and PSD files
StageNot given Not given
FoundedNot given Not given
Based inNot given GB
Pricing modelFreemium Free
PricingFree: $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. Not given
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
  • PSD import and export with editable text and shapes
  • Layers, masks and adjustment layers
  • On-device background removal and subject selection
  • Healing, cloning and object removal
  • Smart objects and smart filters
  • Offline editing after resources are cached
  • Support for RAW camera files
  • 8-bit and 16-bit editing
  • Multiple export formats including PNG, JPEG, WebP, TIFF and PDF
  • Editable design templates
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
  • Completely free with no account required or watermarks on exports
  • All editing happens locally on your device without uploading photos
  • Works offline after resources are cached
  • Opens and saves layered PSD files with editable text and shapes
  • Open-source components with credited licenses
Community votes00
DR (Domain Rating by Ahrefs)Not checked yet no change since last check19 +19 (up) since last check
Trust Flow (Majestic)00
Citation Flow (Majestic)240
Referring domains (Majestic)460

4 details filled in for both companies.

More alternatives to Chalk More alternatives to Photostar

Support