PoolsKey: Pool Water Testing

KeyInventions LLC

In-app purchases

About this app

Stop guessing at your pool chemistry. PoolsKey turns any test strip into an exact, pool-specific dosing plan in seconds — just point your camera.

Scan → read → dose.
Hold your used test strip up to the camera. PoolsKey reads every pad, matches the colors against lab-calibrated swatches, and instantly tells you exactly which chemicals to add and how much — sized to YOUR pool or spa. No charts, no math, no "add some and hope."

Built for real backyards.
• Works with the test strips you already own
• Exact doses in the units you buy (lb, oz, fl oz)
• Chlorine, salt, and bromine pools — plus spas & hot tubs
• Free chlorine, pH, total alkalinity, cyanuric acid, calcium hardness
• Water-balance (LSI) and clear, plain-language "what to do next"
• Safe application order and re-test timing built in

Know your water over time.
Log every treatment, watch trends, and get reminders so problems never sneak up on you.

PoolsKey Free: 4 scans per month, 1 pool, full manual dosing.
PoolsKey Pro (7-day free trial, then $4.99/month or $29.99/year): unlimited scans, up to 10 pools & spas, AI photo auto-detect, history & trends, smart reminders, AI pool assistant.

Balanced water, no pool guy required.

Subscriptions auto-renew unless cancelled at least 24 hours before the period ends. Manage in Google Play. Terms: https://poolskey.com/terms · Privacy: https://poolskey.com/privacy

What’s new

Redesigned water-health rings, a new History screen with trends, cleaner Today and Results, and a sharper AI Pool Assistant. Plus reliability fixes throughout.