Color Vision Self-Check

See the number in the dots? Color Vision Self-Check is a quick, private way to screen your color vision at home with Ishihara-style dot plates — the same "read the hidden number" test used for red-green color deficiency.

Look at each plate, tap the number you can read, and get an instant reference result: color vision looks normal, a possible red-green deficiency, or strong difficulty telling colors apart. It takes about a minute.

WHY PEOPLE USE IT
• Curious whether you might be red-green color deficient (color blind)
• A quick pre-check before a driver's license, job, or physical that includes a color vision screening
• Re-checking on a better screen or in better light
• A simple, shareable test for family and kids

FEATURES
• Ishihara-style dot plates generated on the fly — fresh each run, no downloads
• Red-green screening plus a plain-language result and accuracy score
• Control plates readable by everyone, to keep the result honest
• Works fully offline — no sign-up, no account, no personal data collected
• Clean, distraction-free design in English, Korean, Japanese and Traditional Chinese

IMPORTANT — REFERENCE ONLY
This app is for reference and self-screening. It is not a medical device and does not diagnose or treat any condition. Phone screens, brightness, color settings, and room lighting all change how colors look, so results can vary. For an accurate assessment, see an eye doctor (ophthalmologist).

View colors more clearly? Take the check now and see the number in the dots.

Recent changes:
v1.0
• First release: Ishihara-style color vision self-check (red-green screening)
• Instant reference result with accuracy score
• English, Korean, Japanese, Traditional Chinese — works offline