Ok, could be cheaper
walks you through the balance thing without making you feel dumb
Yep
plug in the numbers, it tells you what to add. that's it. that's the app. love it
$3.99 Free
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Price history
About
This app helps hot tub owners maintain clean water by calculating exact chemical doses based on test readings and tub volume. It offers brand-specific calculations and supports both bromine and chlorine sanitizers, providing clear advisories for adjustments.
✓Brand-aware chemical dose calculations
✓Bromine and chlorine sanitizer support
✓Exact dose recommendations with advisories
✓After-use dose scaling
✓Weekly shock guide
✓Metric/imperial unit support
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What's New in Soak
1.3
June 27, 2026
You can now unlock Soak Pro at any time from Settings, without waiting for the trial to end. Plus small reliability improvements.
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FAQ
What is the price of Soak?
Soak is available for a one-time purchase of $3.99. There are no subscriptions, ads, or in-app purchases required to use its full functionality.
Does Soak have ads?
No, Soak is completely ad-free. The app is designed to provide a clean user experience without any advertisements.
What devices does Soak support?
Soak is a universal app that supports both iPhone and iPad devices. It is designed to work seamlessly across Apple's mobile platforms.
How often is Soak updated?
The latest version of Soak was released on June 23, 2026, indicating recent development activity. Users can expect ongoing support and potential updates.
Is Soak suitable for all hot tub sizes?
Soak is designed for home spas ranging from 250–500 gallons (950–1900 liters). It provides scaled doses specific to these common hot tub volumes.
Does Soak require an internet connection?
No, Soak works offline. This means you can use it to manage your hot tub chemistry even without an internet connection, ensuring convenience.
What information does Soak collect about users?
Soak collects absolutely no user data. It does not use analytics, require accounts, or make network requests, ensuring complete user privacy.
What is the age rating for Soak?
Soak has an age rating of 4+. This indicates it is suitable for users of all ages and does not contain any mature content.