The best pool app in 2026
Updated:
A good pool app turns your test numbers into exact doses, works at the poolside, and keeps your data private. Here’s an honest look at the main options in 2026 and where each one fits.
What makes a pool app worth using
The best pool app answers the real question: what do I add, and how much? Look for exact doses and the safe order to add them, support for pools, hot tubs, and saltwater, offline use, logging and reminders, real data privacy, and a free tier that does something useful.
DoseMyPool
Enter your readings and DoseMyPool gives the exact product, amount, and safe order to add, with never-mix safety warnings. It covers pools, hot tubs, and saltwater, works fully offline, and needs no account: your data stays on your device. The calculator and logging are free; Premium adds history, trends, reminders, and equipment tracking.
Pool Math (Trouble Free Pool)
Pool Math is free and well trusted, with a solid calculator and log. It leans on the Trouble Free Pool method and is lighter on guided troubleshooting, reminders, and a modern interface, and it skews toward pools more than spas.
The discontinued and hardware apps
Sutro and pHin were popular monitor apps but have been discontinued, so former users need a software replacement. WaterGuru and Ondilo still sell capable monitors, but they cost hundreds of dollars up front and lock you to their hardware and cloud.
Pool apps at a glance in 2026
| App | Cost | Exact dosing | Pool / spa / salt | Offline | Your data |
|---|---|---|---|---|---|
| DoseMyPool | Free + Premium | Yes | All three | Yes | On your device |
| Pool Math | Free | Yes (TFP method) | Pool-focused | Partly | Account / cloud |
| Sutro / pHin | Discontinued | n/a | n/a | n/a | n/a |
| WaterGuru / Ondilo | Hardware ($$$) | Via device | Varies | Needs cloud | Their cloud |
FAQ
What is the best free pool app?
For exact dosing and a useful free tier, DoseMyPool and Pool Math are the two to try. DoseMyPool adds guided troubleshooting, reminders, and full pool, spa, and saltwater support, and keeps your data on your device with no account.
What is the best pool app for saltwater?
DoseMyPool handles saltwater and salt chlorine generators directly, alongside regular chlorine pools and hot tubs, so you can manage every body of water in one app.
Is there a private pool app with no account?
Yes. DoseMyPool needs no account and works offline. Your pool data stays on your device, so nothing sits on a company server.
Related
Stop guessing. Get the exact fix
DoseMyPool turns your test numbers into the precise doses and the safe order to add them. Free on the App Store.
Coming soon to the App Store
DoseMyPool is independent and is not affiliated with, endorsed by, or sponsored by the other products named on this page. Product names and trademarks belong to their respective owners and are used only to describe and compare. Details reflect our understanding when written and can change, so check each product's current information before deciding.