Poolstead: Pool Calculator

Chemical doses & water log

Only for iPhone

Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.

iPhone

Use your product label, keep your actual additions, and see one clear pool history. Poolstead is a private pool calculator and water log for the tests and product labels you already use. Save one pool with its volume in litres, cubic metres, US gallons, or Imperial gallons. Add a water test in a few taps, with only the readings you have. Keep chlorine, pH, total alkalinity, calcium hardness, cyanuric acid, salt, temperature, method, date, and notes together when they are useful to you. Calculate an increase from an explicit current and target reading, volume, and product label strength. Poolstead covers available chlorine, salt, cyanuric acid, total alkalinity with sodium bicarbonate, and calcium hardness with calcium chloride. Choose the concentration form, density, purity, or calcium chloride form that matches the label. The estimate always shows its assumptions. A calculation is not a treatment record. Save what you actually added, at the amount and time you choose, with an optional snapshot of the calculation that led to it. Correct, backdate, or delete water tests and treatments later. Review one history and export your own CSV whenever you need it. Poolstead stores records on your device and can use your private iCloud account for your own devices when available. It does not read test strips, prescribe target ranges, calculate pH or acid/base doses, determine whether water is safe, or guarantee a resulting concentration. One pool, all five calculation families, water tests, actual treatment history, CSV export, private iCloud when available, and support are free. A one-time Poolstead Plus purchase unlocks additional pools and local PDF reports. The App Store shows the actual localized price. There is no subscription.

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The developer, Pragmatiq, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Linked to You

    The following data may be collected and linked to your identity:

    • Contact Info
    • User Content

  • Data Not Linked to You

    The following data may be collected but it is not linked to your identity:

    • Purchases
    • Identifiers
    • Usage Data
    • Diagnostics

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Information

Seller
Pragmatiq
Size
3.3 MB
Category
Utilities
Compatibility
Requires iOS 17.0 or later.
  • iPhone
    Requires iOS 17.0 or later.
  • Mac
    Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.
  • Apple Vision
    Requires visionOS 1.0 or later.
Languages
English and French
Age Rating
4+
In-App Purchases
Yes
Copyright
© 2026 Pragmatiq
  • Developer Website
  • Privacy Policy

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