Read any water test strip.
Actually accurately.
Photograph a used test strip and Chrometry measures each pad's real color with lab-grade CIELAB + ΔE2000 color science — instead of asking you to eyeball a match against a printed chart.
We'll only email you about Chrometry access — no spam, no list sales.
Currently in limited testing — not yet on the App Store.
Accuracy first
ΔE2000 color matching and a refuse-to-guess confidence gate — if a reading isn't trustworthy, Chrometry says so instead of pretending.
Private by design
Everything runs on your device. No account, no cloud upload, no analytics. Your photos never leave your phone.
Built for everyone
Status is always shown as text and a number, never color alone — designed with colorblind users as a first-class audience.
Every context
One app for pool, spa, aquarium, and drinking water — with recommendations tailored to what you're testing.
Works across: