Pool
Ally vs Sutro
Sutro is a floating pool and spa monitor that automatically tests pH, free chlorine, alkalinity, and temperature, then dispatches readings to a companion app.
Choose Ally if
Pool owners who want to start without buying hardware and use the test strips they already own.
Choose Sutro if
Owners who want fully automated, hands-off readings and don’t mind subscription costs.
Feature comparison
| Feature | Ally | Sutro |
|---|---|---|
| AI photo strip analysis | ||
| Hands-free continuous testing | ||
| Hardware required | ||
| Subscription required | Optional | |
| AI care recommendations | Basic | |
| Voice commands and hands-free mode | ||
| Aquariums, pools, spas, and ponds in one app | Pool/spa | |
| Free tier available |
Yes No Partial / see notes
Comparison data sourced from publicly available product information. Last reviewed May 2026.
Ally platforms
iPhone and iPad, on the Apple App Store
Sutro platforms
iOS, Android
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