Trichromacy Color Tool vs Proref

Trichromacy is a color tool for people who actually work with color — designers, illustrators, painters, and anyone who builds with palettes for a living. Build palettes from any seed color. Pick a color, choose a harmony rule (complementary, analogous, triadic, split-complementary, tetradic, square), and generate balanced palettes ready to export. Extract colors from your photos. Pull a palette of dominant colors from any image, or posterize a photo into tonal values to study light and shadow the way a painter does. Explore color in three dimensions. Most apps work in sRGB, which is mathematically convenient but doesn't match how humans see color. Trichromacy lets you work in perceptually-uniform color systems — Munsell, OKLCH, LCH, and HSLuv — and visualize them as 3D solids you can rotate, slice, and study. Export everywhere. Save palettes as JPEG, PDF, ASE (Adobe), CSS, or hex lists. Use them in Photoshop, Figma, your design system, or your sketchbook. Built for working professionals, not flashy demos. Trichromacy keeps the interface calm so the color stays loud.

Proref is where your references live while you draw — and where the finished piece goes afterwards. GATHER YOUR REFERENCES Drop everything you're looking at onto one huge canvas and arrange it into a board. Import from Photos, your camera, Files, a web link, the share sheet, or by dragging straight in from Safari. Zoom from 2% to 25,600%, so the board grows with the project. WORK BESIDE THEM Proref is built for Split View: your references on one side, your drawing app on the other. Sketch and annotate over them with Apple Pencil, with pressure. Tune brightness, contrast and saturation, or crop non-destructively — the original is always recoverable. A minimap shows where you are, and saved views jump you back to any spot in one tap. KEEP THE PIECE, AND THE LESSON When something's finished, keep it. Attach a piece to the board it came from, open it full screen, and see everything you've made on a dated timeline — as a gallery to swipe or a list to scan. Note what worked and what didn't while it's fresh, star the things to carry forward, and those notes sit in a pane on the board while you draw the next one. If you'd rather Proref stayed purely a reference app, turn the art journey off in Settings and it does. PRIVATE BY DEFAULT No accounts. No sign-in. No server. No tracking, no analytics, no ads. Your boards, your artworks and your critique notes stay on your device. FREE, WITH A ONE-TIME UNLOCK Proref is free to use with 2 boards, 10 images per board, 3 saved views, 5 finished artworks, and 3 focused critique notes per piece. Proref Pro removes those limits and unlocks every feature — a single one-time purchase, not a subscription. Buy it once and restore it on your other devices.