Free
$0
- Full chemistry engine & verdicts
- One pool
- 30 days of history
- Trends, reminders, widgets
- SLAM assistant
Pooldex
Clear water in under a minute a day.
Log a test on big keypads. Get exact doses for the chemicals you own. Keep every reading on your device and your iCloud — not ours.
No subscription · No account · Exact amounts like 27.6 fl oz
The 15-second loop
Open the app. Enter what you tested. Save. Done.
-
1
Enter readings
FC, pH, TA, CH, CYA, salt — only the params you ran today. Last values ghosted for reference.
-
2
Get a verdict
What’s fine, what’s off, and exact amounts for liquid chlorine, cal-hypo, trichlor, acid, baking soda, and more.
-
3
Keep the history
Trends, reminders, widgets, CSV/PDF export, and one-file backups you can restore anytime.
See problems coming
Trends with target bands and dose markers — so you catch CYA creep and FC that won’t hold overnight before the water turns.
One price. Forever.
Built for trust
Stability over redesigns. Chemistry you can check.
-
No account
Nothing to sign up for. Pool data lives in SQLite on your phone and optionally syncs through your private iCloud.
-
Safety-first doses
Acid recommendations are capped to one-third of full demand, with “retest between” guidance baked in.
-
Yours to export
CSV, printable service PDFs, rolling snapshots, and a full
.poollogbackup file.
Free forever. Lifetime if you want more.
No subscription. No dark patterns. One optional unlock.
Lifetime
$19.99 once
- Unlimited pools
- Unlimited history
- CSV & PDF exports
- Backups & one-tap restore
- Full
.poollogexport/import
Purchased as a non-consumable In-App Purchase through Apple. Restore anytime.
Pool chemistry guides
Practical explainers for the tests and doses you run every week.
- SLAM Method Explained — Clearing Algae the TFP Way What the SLAM method is, how FC targets relate to CYA, and how to track overnight FC loss until the pool is clear.
- Pool Shock vs SLAM — What’s the Difference? Pool shock usually means a one-time FC boost; SLAM means holding high FC until algae is gone and overnight loss is low. Here’s how to choose.
- Pool pH and Alkalinity — What to Fix First Total alkalinity vs pH in pool water — why TA is the buffer, when to use acid or baking soda, and how to avoid chasing pH daily.
- Pool Chlorine Calculator — How Much Chlorine to Add How a pool chlorine calculator works — raise free chlorine with liquid, cal-hypo, or trichlor using your pool volume and product strength.
- How to Balance Pool Water — FC, pH, TA, CH, CYA A practical order for balancing pool water: free chlorine, pH, alkalinity, calcium, and stabilizer — what to fix first and why.
Coming to the App Store
iPhone, iOS 18+. Portrait. Built for drop-kit and strip testers alike.
Questions? support@rimants.com