# Sutro vs WaterLink Home

The clearest difference is review sentiment: Sutro at 73% against WaterLink Home's 28%. Sutro also leads on iOS requirement (12.4 vs 15.0). WaterLink Home's advantage is rating (4.6 vs 3.9). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

WaterLink Home holds the better App Store score, 4.6 against 3.9. Both are backed by a comparable volume of ratings — 175 and 89 respectively. Written reviews complicate that: 73% of Sutro's written reviews are positive against 28% of WaterLink Home's, so the app with the better star average is not the one people write more warmly about.

Sutro ships an update every 2 months, WaterLink Home every 6 weeks. The most recent releases landed on November 2, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | Sutro | WaterLink Home |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.9 (175 ratings)](https://appshunter.io/ios/app/sutro/id1439627399/reviews) | **[4.6 (89 ratings)](https://appshunter.io/ios/app/waterlink-home/id1500943677/reviews)** |
| Number of ratings | **175** | 89 |
| Positive reviews | **72.9% of reviews** | 28.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 6 weeks** |
| Monetization | Free | Free |
| Size | 39 MB | 131 MB |
| Requires iOS | **12.4** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Sutro Connect Inc](https://appshunter.io/developer/1439627398) | [LaMotte Chemical Products Company](https://appshunter.io/developer/975652461) |

## What reviewers say

### Sutro

[App page](https://appshunter.io/ios/app/sutro/id1439627399)

Effortlessly manage your pool or spa water quality. This app works with a smart monitor to automatically track pH, free chlorine, alkalinity, and temperature, providing insights that make sense for optimal water conditions.

**Highlights:** Automatic water quality monitoring, pH tracking, Free chlorine measurement, Alkalinity tracking, Temperature monitoring, Seamless app integration

**In-app purchases:** none

**What reviewers like**

- 🚀 Easy to use
- 👍 Accurate water testing
- 💡 Helpful notifications and recommendations
- 🔒 Reliable customer support
- 🚀 Convenient pool monitoring

**What reviewers complain about**

- 🐛 Connectivity issues
- 🐛 Inaccurate readings
- 🐛 Buggy app performance
- 🔋 Expensive subscription
- 🐛 Setup difficulties

**Reported bugs**

- App crashes and freezes
- Disconnection issues with hub
- Calibration failures
- Inaccurate water chemistry readings

**Requested features**

- Measure total hardness and CYA
- Customizable notification settings
- Ability to cancel subscription easily
- Improved app stability and user experience


### WaterLink Home

[App page](https://appshunter.io/ios/app/waterlink-home/id1500943677)

This app provides detailed water analysis for pools, spas, and aquariums. It offers step-by-step treatment recommendations tailored to your water chemistry and saves historical test data with charts and graphs. Connect with local professionals for customized treatment plans.

**Highlights:** Detailed water chemistry analysis, Customized treatment recommendations, Historical test data tracking, Multiple supported test methods, Chemical and dosage customization, Professional connection via Homelinks

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Sutro free?

Sutro is free to download, with no in-app purchases.

### Is WaterLink Home free?

WaterLink Home is free to download, with no in-app purchases.

### Which has better reviews, Sutro or WaterLink Home?

WaterLink Home is rated higher. Sutro averages 3.9 out of 5 from 175 ratings, while WaterLink Home averages 4.6 from 89 ratings.

### Do Sutro or WaterLink Home have ads?

Neither Sutro nor WaterLink Home shows ads.

### Which is updated more often, Sutro or WaterLink Home?

Sutro ships an update every 2 months, and WaterLink Home every 6 weeks. Most recently, Sutro was updated on November 2, 2026 and WaterLink Home on November 7, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*