poolcntrl: Pool Maintenance

poolcntrl: Pool Maintenance

Chlorine & pH dose calculator

1 ratings
Free
In-App Purchases

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Details

  • Released
  • Updated
  • July 31, 2026
  • August 13, 2026

Features

poolcntrl: Pool Maintenance screenshot #1 for iPhone
poolcntrl: Pool Maintenance screenshot #2 for iPhone
poolcntrl: Pool Maintenance screenshot #3 for iPhone
poolcntrl: Pool Maintenance screenshot #4 for iPhone
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About

This app simplifies pool maintenance by providing exact chemical dosing instructions based on your water test readings. It offers guidance on product amounts, order of addition, and retesting schedules, with a free calculator and optional Pro features for advanced tracking and weather-aware advice.

Exact chemical dosing calculations
Guidance on product amounts and order
Retesting schedule reminders
Free water test calculator
Weather-aware maintenance advice
Pool opening and closing checklists
Chemical and maintenance logging
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What's New in poolcntrl

1.2.0

August 13, 2026

The free tier is gone, and that is good news. Everything, for two weeks A new account now gets the whole app for two weeks — history, trends, reminders, weather, strip scanning, photo diagnosis, more than one pool. No card, nothing to cancel. Previously the free tier locked you out on your very first test; now you get the whole loop before deciding anything. The no-account calculator is unchanged and still permanent. Dosed against your jug, not a generic one Tell poolcntrl the strength printed on the bottle in your garage and the amount changes to match. A 12.5% jug and a 10% jug were never the same instruction, and low-fume muriatic is less than half the strength the old formulas assumed. Why this amount? Every recommendation now opens to show its arithmetic — your volume, your target, the math, and where the rounding went. Somebody to ask A new in-app assistant answers questions about your water, your equipment, the app, and your account. It explains and points you at your own numbers; it never prescribes a dose. Made for people who just got a pool A first-run checklist that takes you from empty app to first dose. Tap any acronym — FC, TA, CYA — for a plain-language definition without leaving the screen. Learn articles now reachable from the dashboard, and "Why?" links from the readings themselves. Closing the retest loop "Retest now" straight from History, plus a reminder four hours after a dose, when the water has actually had time to move. Trends worth reading Chart any reading over 30 days, 90 days, the season, or everything you have. Saltwater Salt now appears in every summary that should mention it, with honest generator guidance instead of brand-specific claims. Your data is yours Download your full water-test and dose history as a CSV from the member area at poolcntrl.com. Also: saving no longer interrupts you with a pop-up, the satellite trace asks you to confirm the pool it found, you can resend a confirmation email from the check-your-inbox screen, subscription status reflects what the server actually knows, and the permission prompts finally explain themselves.

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Subscription plans

poolcntrl Pro (Monthly)

Monthly poolcntrl Pro subscription.

$5.991 Month
7 Days trial
How to cancel poolcntrl subscription ⁉️

FAQ

Does poolcntrl have ads?

No, poolcntrl is ad-free. The free calculator requires no subscription or account, and the app does not contain advertisements.

What is the cost of poolcntrl Pro?

poolcntrl Pro is available for $5.99 per month or $49.99 per year, with a 7-day free trial for both plans. You can cancel anytime through your Apple ID settings.

What pool readings does poolcntrl calculate doses for?

poolcntrl calculates exact doses for chlorine, pH, alkalinity, stabilizer, calcium hardness, and salt for saltwater pools based on your entered readings.

Can poolcntrl help with pool opening and closing?

Yes, poolcntrl Pro includes guided checklists for opening and closing your pool, and provides nudges when it's time to perform these seasonal tasks.

Does poolcntrl use AI for dosing calculations?

No, poolcntrl uses a versioned chemistry engine for deterministic dosing calculations. The same readings will always produce the same answer, and it is not written by AI.

What happens if my pool readings are unsafe?

If your readings are implausible or unsafe, poolcntrl will decline to give a dose and will instead explain why it cannot provide guidance, prioritizing safety.

What devices does poolcntrl support?

poolcntrl is supported on iPhone and iPod devices. It is designed for residential pool owners.

How often is poolcntrl updated?

The latest version of poolcntrl is 1.1.0, last updated on August 7, 2026. Updates are released to improve functionality and reliability.