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Undertone vs IconStash

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 IconStash
DetailUndertone logo UndertoneIconStash logo IconStash
What it doesSee why colors work Instant browser-based search engine for 134,701 open-source SVG and PNG icons across 28 libraries
StageNot given Not given
FoundedNot given Not given
Based inNot given Not given
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
  • Search 134,701 icons across 28 libraries simultaneously
  • Real-time color and stroke-width customization
  • Export to SVG, PNG, React JSX, Vue, CSS, HTML, and SVG sprites
  • Compare the same icon across multiple libraries
  • No login or API key required
  • 100% client-side processing with no server communication
  • Works offline after first load
  • Support for 28 open-source icon families
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
  • Complete privacy with 100% client-side processing
  • Instant zero-latency search and customization
  • 94.5% of icons require zero attribution
  • Export to multiple code formats with one click
Community votes00
DR (Domain Rating by Ahrefs)8 +1 (up) since last check16 +1 (up) since last check
Trust Flow (Majestic)45
Citation Flow (Majestic)3222
Referring domains (Majestic)3131

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