Lifestyle

PoolLog - Water Test & Dose

Pool water testing & dosing

iOS 17.0 or later · Updated May 2026 · 34 languages
Download on the App Store
Free One-time unlock · $5.99
PoolLog - Water Test & Dose icon
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The field journal for your pool. Log water tests, get precise chemical dose calculations for your pool volume, and track how your water changes over the season.

Read full description +
PoolLog is the field journal for your pool. Log water tests, get precise chemical dose calculations, and track how your water changes over the season - without a subscription. Test Results In. Doses Out. Enter your test strip readings and PoolLog instantly calculates the exact amount of every chemical you need - chlorine, pH adjuster, alkalinity increaser, calcium hardness, stabilizer, and salt. Doses are calculated for your specific pool volume so the math is always right. A Season Log Built for Homeowners Every reading you record is saved to your history. See how pH and free chlorine trend over 30 days, spot drift before it becomes a problem, and build a complete picture of your water over the entire season. Set Up Once, Stay Accurate Tell PoolLog your pool volume, surface material, and sanitizer type. Target ranges and dose math are automatically calibrated to your setup - whether you have a plaster, vinyl, or fiberglass pool, or a salt-chlorine generator. What's Included • Dose Calculator - exact chemical amounts for your pool volume • Six parameters - Free Chlorine, pH, Total Alkalinity, Calcium Hardness, CYA, Salt • Season History - every reading stored with date and notes • Trend Charts - 30-day graphs for key parameters • Alternative Chemicals - multiple product options for each dose • Notes & Photos - attach a test strip photo to every reading • Supports chlorine, bromine, and saltwater systems • Metric and imperial display • Works offline, no account required Pay Once. Yours Forever. Every other pool app charges a monthly fee. PoolLog does not. One purchase unlocks alt chemicals, history charts, and notes & photos - with no ongoing cost and no data collected. Download PoolLog and start this season with a complete log of your water. Clear water starts with accurate readings.
Exact doses for your pool volume
Six water parameters tracked
30-day trend charts
Notes and test-strip photos
Chlorine, bromine & saltwater systems
PoolLog - Water Test & Dose
Pool water testing & dosing
Download on the App Store
What is PoolLog? +

PoolLog turns your test-strip readings into exact chemical doses for your specific pool volume, and logs every reading so you can track trends across the season.

Which pool types does it support? +

It supports chlorine, bromine, and saltwater systems, and plaster, vinyl, or fiberglass surfaces. Target ranges and dose math calibrate to your setup.

Is there a monthly fee? +

No monthly fee. Unlike many pool apps, PoolLog uses a single one-time purchase that unlocks alternative chemicals, history charts, and notes and photos.

Which water parameters does it track? +

Free chlorine, pH, total alkalinity, calcium hardness, cyanuric acid (CYA), and salt - with 30-day trend charts for the key ones.

Does PoolLog work offline? +

Yes. It works offline with no account required; your readings stay on your device.