Sutro vs WaterLink Home
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Sutro
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.
- Automatic water quality monitoring
- pH tracking
- Free chlorine measurement
- Alkalinity tracking
- Temperature monitoring
- Seamless app integration
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Sutro is the simple, safe, and seamless way to manage your Pool (or Spa) water with measurements that make sense and monitoring that is automatic. The Sutro app works with the Sutro Smart Monitor to measure your pool or spa’s pH, free chlorine (ppm), alkalinity, and temperature without you having to do anything.
WaterLink Home
This app provides detailed water analysis for pools and spas, offering step-by-step treatment recommendations. It supports multiple testing methods and allows customization of chemicals and dosage rates. Connect with professionals for tailored advice.
- Pool and spa water analysis
- Step-by-step treatment recommendations
- Multiple supported test methods
- Customizable chemical and dosage rates
- Historical test data storage
- Connect with pool professionals
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WaterLink Home puts powerful, prescriptive water analysis in your hand. For the DIY homeowner or aquarist looking to take water analysis to next level, WaterLink Home is a fully featured, powerful water analysis app. Based on our professional grade WaterLink Solutions Pro software, WaterLink Home provides only the features you need without sacrificing any of the power. --Analysis for Pools, Spas & Aquariums -- Create up to 5 unique bodies of waters to monitor and analyze water chemistry. Water tests produce detailed, step-by-step treatment recommendations tailored to your water. Every historical test is saved in your free account, with helpful charts and graphs for easy data analysis. --Amazing Supported Test Methods-- WaterLink Home offers three incredible testing methods for submitting test results. • The LaMotte ColorQ2x Photometer • The industry leading LaMotte Spin® • Photo-scan several supported LaMotte Insta-TEST® test strips • LaMotte Pulse® • Custom Test methods allow manual input of test results --Customizable-- Customize the chemicals and dosage rates based on the products you use to treat your water. --Homelinks-- The Homelinks feature allows WaterLink Home Users to connect with WaterLink Solutions Pro accounts. This allows Home users to stay in touch with their local pool and spa professional. When connected to a Pro account, Home users can utilize the treatment profiles and chemicals from their local pool and spa professional, receiving treatment recommendations based on chemicals sold at their local shop. Pro users can monitor Home user testing in real time. --Absolutely Free!-- WaterLink Home is absolutely free to use. Simply download the app and create a free account to get started.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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 85 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 October 15, 2026 and October 27, 2026 respectively.
| Parameter | Sutro | WaterLink Home |
|---|---|---|
| Price | Free | Free |
| Rating | 3.9 (175 ratings) | 4.6 (85 ratings) — better |
| Positive reviews | 72.9% of reviews — better | 28.0% of reviews |
| Number of ratings | 175 — better | 85 |
| Update frequency | Every 2 months | Every 6 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 12.4 — better | 15.0 |
| Further details — not scored | ||
| Size | 39 MB | 130 MB |
| Age rating | 4+ | 4+ |
| Developer | Sutro Connect Inc | LaMotte Chemical Products Company |
Customer experience
Sutro
WaterLink Home
Bugs and requests
Sutro
Reported bugs
4 issues- App crashes and freezes
- Disconnection issues with hub
- Calibration failures
- Inaccurate water chemistry readings
Requested features
4 requests- Measure total hardness and CYA
- Customizable notification settings
- Ability to cancel subscription easily
- Improved app stability and user experience
WaterLink Home
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Sutro
No in-app purchases
WaterLink Home
No in-app purchases
