Holy Water: Pool Chemistry
Dane Marguglio Utilities iPhoneiPadiPod touch
Holy Water: Pool Chemistry is a free Utilities app for iPhone and iPad by Dane Marguglio. Rated 5.0/5 from 3 ratings. Requires iOS 18.0.
- Rating
- 5.0
- 3 ratings
- Price
- Free
- on the App Store
- Size
- 3 MB
- Age 4+
- Updated
- Jun 25
- 2026 · v1.1
Screenshots
About Holy Water: Pool Chemistry
Holy Water makes logging your pool or spa water chemistry fast and painless. Tap the parameters you measured: free chlorine, pH, alkalinity, cyanuric acid, salt, and more. Punch in the numbers, and save. Every reading is color-coded against its ideal range, so you can see what needs attention at a glance. Holy Water Pro is an auto-renewable subscription ($2.99/month or $19.99/year) that imports test results from your favorite pool store report or your handwritten measurements. Payment is charged to your Apple Account at purchase, and renews automatically unless cancelled at least 24 hours before the period ends. Manage or cancel anytime in your Apple Account settings. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
What’s new
Version 1.1 · Updated June 25, 2026
Treatments are here! • Log what you do to your pool — chemicals (acid, chlorine, salt…) and maintenance (backwash, brush, vacuum…), with quick, flexible amounts. • See treatments right alongside your readings in History, and edit or delete any entry. • Edit pools you own — name, volume, surface, and salt. • Clearer free-chlorine guidance, including a new "Shock" indicator so you know when to wait before swimming. • More reliable sign-in and syncing across your devices. • Assorted fixes and polish.
App privacy
The developer, Dane Marguglio, reported these privacy practices to Apple.
Data Linked to You
The following data, which may be collected and linked to your identity, may be used for the following purposes:
- Contact Info: Email Address
- User Content: Other User Content
- Identifiers: User ID
Used for: App Functionality
Alternatives to Holy Water: Pool Chemistry
Looking for apps like Holy Water: Pool Chemistry? Here are 6 similar apps on the App Store. The highest rated is ZenTest-Smart Water Tester (4.6/5), and all 6 are free to download.
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Pool Conductor
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BactiQuant® Water Test
1.0
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ZenTest-Smart Water Tester
4.6
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Schiit Forkbeard
4.2
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Konnected Smart Home
2.4
-
Temprobe
2.4
| App | Rating | Price | Last updated | Compare |
|---|---|---|---|---|
| Holy Water: Pool Chemistry | 5.0 / 5 (3 ratings) | Free | June 25, 2026 | |
| Pool Conductor | – | Free | Jun 14, 2026 | Compare |
| BactiQuant® Water Test | 1.0 / 5 (2) | Free | Sep 24, 2024 | Compare |
| ZenTest-Smart Water Tester | 4.6 / 5 (51) | Free | Jun 30, 2026 | Compare |
| Schiit Forkbeard | 4.2 / 5 (19) | Free | Sep 30, 2026 | Compare |
| Konnected Smart Home | 2.4 / 5 (43) | Free | Sep 26, 2026 | Compare |
| Temprobe | 2.4 / 5 (19) | Free | Sep 24, 2026 | Compare |