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Undertone vs mask bridge

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 mask bridge
DetailUndertone logo Undertonemask bridge logo mask bridge
What it doesSee why colors work Free, open-source plugin for Lightroom Classic that exports masks as PNG, TIFF or JPEG files
StageNot given Not given
FoundedNot given Not given
Based inNot given FR
Pricing modelFreemium Open source
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. Pay what you want, from €0
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
  • Export masks as PNG, TIFF or JPEG
  • Batch process multiple images and sequences
  • Local AI-powered object detection with RF-DETR
  • Standard and HD Fine Detail quality modes
  • Generate transparent PNG cutouts
  • Offline processing without internet or account
  • Matching filenames for images and masks
  • macOS and Windows support
  • MIT open-source license with source code on GitHub
  • Apple-signed and notarized builds
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
  • Exports masks as image files for use in 3D workflows, compositing and other tools outside Lightroom
  • Processes images locally on your computer with no internet or account required
  • Supports batch workflows for multi-view sequences used in photogrammetry and Gaussian splatting
  • Open source under MIT license with readable and modifiable code
  • Pay-what-you-want pricing with no license key required
Community votes00
DR (Domain Rating by Ahrefs)8 +1 (up) since last check2 no change since last check
Trust Flow (Majestic)42
Citation Flow (Majestic)3214
Referring domains (Majestic)314

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