Moen Flo vs Rinnai Central
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Moen Flo
Manage your home's water system remotely. This app connects to smart devices to monitor leaks, control faucets, manage sprinklers, and track water usage for peace of mind and conservation.
- Remote water control
- Whole-home leak protection
- Smart faucet operation
- Automated sprinkler management
- Water usage tracking
- Customizable alerts
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Protect your home from water damage, monitor usage, and control your water from anywhere — all in one app. Moen Flo apps works with the Moen Flo Shutoff to give you 24/7 whole-home leak protection. Also, compatible with the Moen Smart Water Detector, Smart Sump Pump Monitor, Smart Sprinkler Controller, and Smart Faucet. To learn more, visit moen.com/flo
Rinnai Central
This app connects Rinnai tankless water heater owners to their devices for temperature control and scheduling. Professional installers can use it to register appliances, perform service, access documentation, and order parts.
- Adjust water temperature
- Schedule hot water
- Activate recirculation
- Register appliances
- Perform remote service
- Access documentation
- Order replacement parts
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Rinnai Central helps professionals support customers and gives homeowners convenient control of compatible Rinnai water heating systems from anywhere. For Rinnai PROs and installers, Rinnai Central makes it easier to register products, set up compatible customer devices, access service tools, and stay connected to Rinnai resources. For Rinnai tankless water heater owners, Rinnai Central provides convenient access to temperature control, recirculation settings, scheduling, system status, and maintenance alerts when supported by the connected product. PROFESSIONALS Use Rinnai Central to: ∙ Set parameters and perform service on compatible Rinnai tankless water heaters and boilers. ∙ Register eligible Rinnai products after installation. ∙ Set up and configure compatible customer Wi-Fi modules. ∙ Access product documentation, troubleshooting tools, training, rebates, news, and service resources. ∙ Find the right Rinnai product for your customer's needs. ∙ Access the Rinnai parts webstore. ∙ Manage your professional account and company relationship. ∙ Participate in eligible Rinnai PRO Tech programs when available. HOMEOWNERS Use Rinnai Central to: ∙ Adjust compatible water heating system temperature settings. ∙ Activate recirculation when supported by the product. ∙ Create daily schedules so hot water is ready when needed. ∙ Set vacation mode to help save energy when hot water is not needed. ∙ View real-time system status and maintenance alerts. ∙ Find experienced Rinnai PROs and installers near you. COMPATIBLE PRODUCTS Rinnai Central supports select Rinnai residential and commercial tankless water heaters and compatible accessories. Some features require a supported Rinnai Wi-Fi module or compatible connected product. Product availability, supported features, and access permissions may vary by model. - BLE setup is not available on all Rinnai products. Some products may require the RWM200 Wi-Fi Module accessory, sold separately. - For safety and product support reasons, some device setup and service permissions may be restricted to Rinnai professionals. Read our Data Use and Privacy Policy, Terms, and other important information in the legal section of our App Store description or at the web addresses below. TERMS OF SERVICE https://www.rinnai.us/terms-of-use PRIVACY POLICY https://www.rinnai.us/privacy-policy
Screenshots
Verdict
The clearest difference is rating: Moen Flo at 4.3 against Rinnai Central's 1.6. Moen Flo also leads on ratings volume (22K vs 341) and update cadence (fortnightly vs monthly). On price, review sentiment, ads and in-app purchases 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.
Moen Flo holds the better App Store score, 4.3 against 1.6. That said, the two scores are not equally well evidenced: Moen Flo has 22K ratings behind it against 341, so its average is the more settled of the two. Written reviews point the same way: 15% of Moen Flo's written reviews are positive against 10% of Rinnai Central's.
Moen Flo ships an update fortnightly, Rinnai Central monthly. The most recent releases landed on September 24, 2026 and September 23, 2026 respectively.
| Parameter | Moen Flo | Rinnai Central |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (22K ratings) — better | 1.6 (341 ratings) |
| Positive reviews | 15.2% of reviews — better | 9.9% of reviews |
| Number of ratings | 22K — better | 341 |
| Update frequency | Fortnightly — better | Monthly |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 16.0 | 15.4.1 — better |
| Further details — not scored | ||
| Size | 126 MB | 79 MB |
| Age rating | 4+ | 4+ |
| Developer | Moen Incorporated | Rinnai America Corp |
Customer experience
Moen Flo
Rinnai Central
User reviews
Moen Flo
From 22K App Store ratingsWhat we love
- 🚀 Excellent water monitoring and leak detection
- 👍 Easy to use app and setup
- 🔒 Helpful alerts and notifications
- ⚙️ Useful smart features like scheduling and remote control
Room to improve
- 🐛 Buggy app with frequent crashes and connectivity issues
- 🤖 Poor AI/ML performance in learning water usage patterns
- 🤔 Confusing and unintuitive app interface
- 🔇 Lack of integration with popular smart home platforms like HomeKit
Rinnai Central
From 341 App Store ratingsWhat we love
- 🚀 Works great
- 🚀 Much improved
- 🚀 Fantastic
- 🚀 Working perfectly now
Room to improve
- 🐛 Doesn't work at all
- 🐛 Bug in 4.3.0
- 🐛 Awful. Just terrible
- 🐛 Lousy App
- 🐛 Rinnai does not care
Bugs and requests
Moen Flo
Reported bugs
4 issues- App frequently loses connection to devices
- Water usage data not updating or displaying correctly
- Scheduled water shutoffs not working as expected
- Sensor calibration and setup process unreliable
Requested features
4 requests- Add customizable water usage alerts and thresholds
- Implement time zone settings and data synchronization
- Improve app stability and responsiveness
- Integrate with popular smart home platforms
Rinnai Central
Reported bugs
3 issues- Control failed is still happening in latest version
- Login screen freezes
- Incompatible with older devices
Requested features
3 requests- Add device through Bluetooth missing
- Dark mode option
- Advanced analytics dashboard
In-app purchases
Moen Flo
No in-app purchases
Rinnai Central
No in-app purchases





