Pool Chem – Calculator & Log
Water testing, dosing & CSI
About
Easily calculate precise chemical dosages for your pool water. Track your entire test history on your device, with options for advanced features like trend charts and unlimited pools via subscription.
What's New in Pool Chem
1.3.0
November 8, 2026
Pool Chem Pro is now a monthly or yearly subscription, or one of three lifetime options with the same features; only the support amount differs. Bought Pro before? It stays unlocked — use Restore purchase on a new device. The purchase screen is easier to close and tells you when the App Store can't be reached. The quick guide and purchase messages now follow the app language. Also: dose cards read better with large text, and tapping outside closes the number pad.
MoreSubscriptions & In-App Purchases
Pro Monthly
Unlock all Pro tools. Billed monthly.
Developer apps
FAQ
What is Pool Chem?
Pool Chem is a mobile application designed to help pool owners calculate precise chemical dosages for their water. It also provides a comprehensive log of all your water test history, keeping the data securely on your device.
Does Pool Chem have ads?
No, Pool Chem does not contain advertisements. The app is ad-free, ensuring an uninterrupted user experience for all calculations and logging.
What are the features of Pool Chem Pro?
Pool Chem Pro unlocks advanced features such as unlimited pools, detailed trend charts to visualize your water chemistry over time, and the ability to export your data to CSV. It also allows for custom target settings.
How much does Pool Chem Pro cost?
Pool Chem Pro offers several subscription options, including monthly and yearly plans, as well as three different lifetime purchase options. The exact pricing is displayed within the app before you make a purchase.
Can I cancel my Pool Chem Pro subscription?
Yes, you can manage or cancel your subscription at any time through your App Store account settings. Subscriptions automatically renew unless cancelled at least 24 hours before the end of the current billing period.
What devices is Pool Chem available on?
Pool Chem is available on iPhone, iPad, and iPod. It is designed to be compatible with Apple devices running iOS.
How often is Pool Chem updated?
The latest version of Pool Chem is 1.3.0, which was last updated on November 8, 2026. Updates typically include bug fixes, performance improvements, and new features.
Is my Pool Chem data safe?
Yes, your data is kept private and secure. Pool Chem stores all test logs directly on your device, and no account or cloud synchronization is required, meaning your data remains yours.
