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Undertone vs Photostar

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

Undertone compared with Photostar
DetailUndertone logo UndertonePhotostar logo Photostar
What it doesSee why colors work 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: Original view, Temperature map, Value structure, Saturation map, Palette and Harmony for every image, 20 analyses at a time. Lifetime Premium: one-time purchase includes Composition guides, Contrast map, tinted value bands, unlimited history, full-res export. No subscription. Not given
Key features
  • Palette with proportions showing dominant colors sized by image weight
  • Color harmony identification (Complementary, Analogous, Triadic, Split-complementary, Tetradic, Square, Monochromatic)
  • Temperature map showing warm and cool distribution across image
  • Value structure divided into clear zones (light, mid-tone, dark)
  • Saturation map showing vivid and muted areas
  • Composition guides identifying classic guides like golden ratio and rule of thirds
  • Contrast map showing where the eye lands first (Premium)
  • Painter-friendly color names (Yellow Ochre, Payne's Gray, etc.)
  • Local device processing with no image uploads
  • Works offline with no account required
  • 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
  • Shows color proportions, not just colors, recognizing that a 60/5 split is fundamentally different from 50/50
  • Four layers of analysis together show relationships single layers cannot reveal
  • Built by people who actually mix paint with painter-friendly vocabulary
  • Lifetime Premium with single payment, no subscription model
  • All data stays on device, no account signup required
  • 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)8 +1 (up) since last check25 +6 (up) since last check
Trust Flow (Majestic)40
Citation Flow (Majestic)320
Referring domains (Majestic)310

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