Metamer

See the world through different color visions. Live CVD simulation, daltonize filters, true color naming, and a print-ready Ishihara plate generator.

Metamer points your camera at the world and shows it through different color vision. Live simulation of protanopia, deuteranopia, tritanopia, and achromatopsia lets people with typical vision experience what friends, family, and audiences see. Daltonize filters do the inverse: they boost color separation so people with color vision deficiency can tell confusing colors apart.

—— LIVE COLOR VISION CAMERA ——

Pick from seven simulation and daltonize filters and watch the world change in real time. A severity slider tunes every filter for anomalous trichromacy, and each filter remembers its own last strength. Torch, front/back flip, and a zoom control that speaks the same 0.5x / 1x / telephoto language as the system Camera.

—— TRUE COLOR NAMING ——

A movable reticle names the real color under it, even while a filter is active: a carefully chosen 32-name palette, the measured swatch, and the exact hex value. Freeze the frame to inspect a moment, move the points, and switch filters on the held still. Add a second point to compare two colors and get a plain-language verdict on how different they really look.

—— FILTER YOUR PHOTOS ——

Pick any photo and compare original and filtered side by side with locked pinch, zoom, and pan. Tune the filter strength, then share the result as JPEG or HEIC with full metadata preserved.

—— ISHIHARA PLATE GENERATOR ——

Build custom color vision test plates: digits, short text, or arrows, with confusion-line colors for each CVD type and adjustable difficulty. Export print-grade PNG or PDF at 300 DPI.

—— KNOW YOUR TYPE ——

An optional quick check at first launch suggests a starting filter, with graded follow-up plates that estimate how strong it should be. Already know your type? Skip straight to it. It is a quick check, not a medical diagnosis.

—— ACCESSIBLE & PRIVATE ——

Every screen is VoiceOver-usable, including an optional spoken color readout. Everything runs on your device: no images ever leave it, no accounts, no tracking, no data collection.

Metamer is for designers checking their work, teachers and presenters building accessible materials, families understanding how a loved one sees, and anyone with color vision deficiency who wants colors named and separated.