PoolsKey: Pool Water Testing

KeyInventions LLC

In-app purchases

About this app

Stop guessing at your pool chemistry. PoolsKey is a pool water testing app that turns any test strip into an exact, pool-specific dosing plan in seconds — just point your phone 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, hot tub, or spa. No color charts, no math, no "add some and hope."

WORKS WITH ANY TEST STRIP
No special strips to buy. PoolsKey reads the pool test strips you already own — AquaChek, Taylor, JNW, HTH, and generic 4-way, 6-way, and 7-way strips. It's a true pool test strip scanner and reader for any brand.

EVERYTHING YOU NEED TO TEST
• Free chlorine and total chlorine
• pH
• Total alkalinity
• Cyanuric acid (stabilizer / CYA)
• Calcium hardness
• Salt (for salt water pools)
• Bromine (for hot tubs and spas)

A POOL CHEMICAL CALCULATOR BUILT IN
PoolsKey works like a pool chemical calculator and dosing calculator — it computes the exact amount of chlorine, muriatic acid, baking soda, stabilizer, calcium, or salt to add for your exact gallons. Finally know how much chlorine to add, how to lower pH, or how to raise alkalinity — instantly and accurately.

FOR EVERY POOL, HOT TUB, AND SPA
Chlorine pools, salt water pools, bromine spas, and hot tubs — PoolsKey knows the right target levels for each and adjusts the dosing automatically.

FIX COMMON POOL PROBLEMS
Green pool? Cloudy water? Algae? Foam? PoolsKey helps you diagnose the problem and gives a clear, step-by-step plan to get back to clear, balanced, swimmable water fast.

TRACK EVERY POOL OVER TIME
Save your readings, watch water-health trends, get re-test reminders, and keep every pool and spa you take care of in one place.

24/7 AI POOL ASSISTANT (PRO)
Ask anything about your water and get specific, safe advice based on your actual readings.

FREE TO START
Test your water and get exact chemical doses for free. Go Pro for unlimited scans, multiple pools, AI photo reading, trends, reminders, and the AI pool assistant.

Whether you're opening your pool for summer, balancing a salt water system, keeping a hot tub clear, or just tired of trips to the pool store, PoolsKey makes pool water testing and chemical dosing effortless.

Download PoolsKey and never guess at your pool chemistry again.

What’s new

Now available in Spanish (Español)! Plus reliability improvements.