简体中文

Coming soon to the App Store
Metamer app icon

Metamer

Color Vision Camera

Point your camera at the world and see it through different color vision. Live filters simulate four kinds of color blindness, or daltonize the view to boost color separation for color-blind eyes. The same filters work on photos you already have, and a print-grade generator builds custom Ishihara test plates.

Simulate Protanopia Simulate Deuteranopia Simulate Tritanopia Simulate Achromatopsia Daltonize Protanopia Daltonize Deuteranopia Daltonize Tritanopia
7 Filter modes
32 Named colors
300 DPI plate export
3 Languages

🎛️What Metamer does

📷

Live camera, seven ways of seeing

  • Four color-blindness simulations and three daltonize filters, applied to the live feed in real time.
  • A severity slider tunes each filter from 0 to 100%; every filter remembers its last setting.
  • Freeze the frame to inspect colors or switch filters; compare two points for a ΔE76 color-difference verdict.
  • Torch, front/back flip, and pinch zoom whose readout matches the system Camera; tap the zoom pill to hop lenses.
  • Hardware keyboard on iPad: space to freeze, F to flip, R to reset zoom.
🎯

Color naming that tells the truth

  • A movable reticle names the color under it from a 32-name palette (web, X11, and Okabe-Ito), with swatch and hex code.
  • It samples the frame before the filter, so the readout stays the real-world color even while a simulation is on screen.
  • Optional "Speak color names" reads the color aloud with on-device speech (off by default).
🖼️

Gallery: filter the photos you already have

  • Pick any photo, compare original and filtered side-by-side with lock-step zoom and pan, and tune the strength on the spot.
  • Share as JPEG, HEIC, or match-source; EXIF is preserved, plus a small note of the filter applied.
🫧

Ishihara plate generator

  • Digit, letter (up to 3 characters), or arrow plates, with confusion-line colors matched to each CVD type.
  • Difficulty runs from a pure color test (100%) down to easier plates with a brightness cue.
  • Export print-grade 300 DPI PNG or PDF with the plate's parameters embedded.
  • A "Show answer" toggle reveals the hidden glyph, for users who can't read their own plates.
👁️

Quick color-vision check

  • An optional three-step welcome checks each type with two plates; an axis is flagged only when both fail.
  • Flagged axes get easier graded plates that estimate your starting filter strength.
  • "I already know my color vision type" skips straight to a sensible default filter.
  • It's a quick check, not a medical test: see an eye-care professional for a diagnosis.
♿

Accessibility first

  • Every screen works with VoiceOver; the reticle reads out the color name and hex as you move it.
  • The filter bar leads with the daltonize filters for color-blind users, and with the simulations for everyone else.
  • Dynamic Type, 44 pt touch targets, and Reduce Motion respected throughout.
🔒

Your data stays yours

  • No servers, no accounts, no analytics: the camera feed never leaves your device.
  • Photos are saved only when you tap Save, with your permission.
  • Settings and the quick-check result live on your device alone. See the privacy policy.
🔬

Grounded in color science

Simulations use the Machado et al. (2009) matrices for protan and deutan and the two-plane Brettel et al. (1997) model for tritan; daltonization follows the Fidaner, Lin & Özgüven approach. Every still is rendered in linear sRGB, the same working space the models were derived in, so what you see matches the science rather than a too-dark approximation.

Machado, Oliveira & Fernandes 2009 · Brettel, Viénot & Mollon 1997 · Fidaner, Lin & Özgüven 2005

⬇️Get the app

Metamer

Color Vision Camera

Coming soon to the App Store

iPhone, iPad · iOS 18.0+ · English, Español, 简体中文

💌Support

Questions, bugs, or feature requests? We'd love to hear from you.

diveintothefog@gmail.com