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Apps/Pool Free Chlorine Journal

Pool journal

Pool Free Chlorine Journal

iPhone app · Independent software by Danila Pryadko

A private, on-device journal for pool readings and maintenance history.

Free to download. Pro is optional.

View on the App Store

The app is a journal for recording observations. It does not prescribe chemical treatment or replace product labels, testing, or qualified pool-care advice.

Optional Pro

On iOS 16 or later, an optional one-time Lifetime purchase unlocks Journal Pro. Compare the count, average and range of free-chlorine readings across two consecutive 7- or 30-day periods. Logging, history, basic trends, archiving and JSON backup and recovery stay free.

PrivacyWhat the app stores and accessesSupportTroubleshooting and contactTermsLicense and product boundaries

A practical workflow

When to use Pool Free Chlorine Journal

  1. Record a tested free-chlorine value with its date.
  2. Revisit the reading beside maintenance notes.
  3. Keep pool observations in a private local journal.

Choose this app when its documented scope fits the task you want to keep on your iPhone. The free web resources below are independent alternatives for a single worksheet or calculation.

Pool profile and latest free-chlorine observation in the iPhone journal.
Pool profile and latest free-chlorine observation in the iPhone journal. Screenshot from the public App Store listing for version 1.1.0, retrieved November 14, 2026. Display names and layout can vary by installed version. Example values are not recommendations.

Before you choose

Does it tell me how much chemical to add?

No. It records observations and history; it does not calculate a target, chemical dose, treatment or water-safety decision.

Can I use the web worksheet without installing?

Yes. The printable sheet and browser chart work separately. Their CSV files are not app-import files.

How can I keep an extra copy of app data?

Use the app’s own JSON export through Apple’s file interface. A saved worksheet is a separate record, not that JSON backup.

Use it without an app

Free resources for this activity