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Undertone vs Skyelight

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 Skyelight
DetailUndertone logo UndertoneSkyelight logo Skyelight
What it doesSee why colors work Website feedback tool for teams and AI agents
StageNot given Not given
FoundedNot given Not given
Based inNot given US
Pricing modelFreemium Freemium
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. Free: $0/month with 1 workspace, 1 project, 25 agent threads/month. Pro: $24/month (includes 1 paid seat, each extra $7/month or $9/month yearly) with unlimited projects and agent threads. Team: $49/month (includes 1 paid seat, each extra $12/month or $15/month yearly) with unlimited workspaces.
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
  • Annotate any page element with feedback
  • Chrome extension for instant feedback
  • Automatic feedback classification
  • Screenshots captured with every pin
  • Integration with AI agents via MCP
  • Source code context with Skyelight Build
  • Guest feedback without account
  • Slack and Linear integrations
  • REST API for custom integrations
  • Accessibility checks on elements
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
  • Passes feedback directly to coding agents to implement fixes
  • Captures browser errors and failed requests with each pin
  • Works on any page without code changes
  • Free reviewers and guest feedback on paid plans
  • Automatically classifies feedback as bugs, ideas or feedback
Community votes00
DR (Domain Rating by Ahrefs)8 +1 (up) since last check18 −1 (down) since last check
Trust Flow (Majestic)47
Citation Flow (Majestic)3224
Referring domains (Majestic)3118

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