A modern take on the classic Ishihara color blindness test. Every plate is generated fresh — so results can't be memorized or googled. A private, on-device screening in about three minutes.

Get Color Vision on the App Store

$0.99 · for iPhone

Why people use Color Vision

• 🎲 Plates you can't memorize

  Every plate is procedurally generated from a random seed — dot positions, sizes and shades differ on every run, so results can't be looked up or learned.

• 🔒 Fully offline & private

  No backend, no analytics. All computation happens on-device and your history stays on your phone.

• 🧭 Adaptive red-green screening

  Screens for protan and deutan color vision differences, adapting the plates as it goes and reporting a conservative confidence figure.

• 📄 Exportable report

  Share a PDF or JSON report of your results — each one embeds the screening disclaimer.

Color Vision is a screening tool only — it is not a medical diagnosis. Screen colors vary between devices and lighting conditions. Only a qualified eye care professional can diagnose a color vision deficiency.