# Flo by Moen™ vs Sub

The clearest difference is rating: Sub at 4.4 against Flo by Moen™'s 4.0. Flo by Moen™'s advantage is review sentiment (36% vs 15%) and monetization model (free vs ad-supported). 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.

Sub holds the better App Store score, 4.4 against 4.0. Both are backed by a comparable volume of ratings — 1.9K and 778 respectively. Written reviews complicate that: 36% of Flo by Moen™'s written reviews are positive against 15% of Sub's, so the app with the better star average is not the one people write more warmly about.

Flo by Moen™ ships an update every 2 months, Sub every 5 weeks. The most recent releases landed on September 23, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | Flo by Moen™ | Sub |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (1.9K ratings)](https://appshunter.io/ios/app/flo-by-moen/id1114650234/reviews) | **[4.4 (778 ratings)](https://appshunter.io/ios/app/sub-zero-group-owners-app/id1248991284/reviews)** |
| Number of ratings | **1.9K** | 778 |
| Positive reviews | **35.8% of reviews** | 15.1% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 5 weeks** |
| Monetization | **Free** | Ad-supported |
| Size | 69 MB | 69 MB |
| Requires iOS | **15.0** | 15.5 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Flo Technologies](https://appshunter.io/developer/1114650233) | [Sub-Zero and Wolf](https://appshunter.io/developer/983988992) |

## What reviewers say

### Flo by Moen™

[App page](https://appshunter.io/ios/app/flo-by-moen/id1114650234)

This app guides users through migrating their Flo by Moen devices to a new platform before the current app is deactivated. It provides a step-by-step process to ensure a smooth transition for water damage and leak protection devices.

**Highlights:** Guided device migration, Step-by-step instructions, Water damage protection device transfer, Leak detector device transfer, App deactivation guidance

**In-app purchases:** none

**What reviewers like**

- 🚀 Piece of mind
- 🚀 Monitors water usage
- 🚀 Detects leaks
- 🚀 Ability to shut off water remotely
- 🚀 Provides detailed water usage data

**What reviewers complain about**

- 🐛 Inaccurate fixture detection
- 🐛 Frequent false alarms and water shutoffs
- 🐛 Buggy app with connectivity issues
- 🐛 Limited customization and control options
- 🐛 Inconsistent water usage tracking

**Reported bugs**

- App crashes and freezes
- Inability to connect devices to WiFi
- Incorrect water usage data and categorization
- Water shutoffs during normal usage
- Sensor connectivity issues and failures

**Requested features**

- Ability to customize fixture types
- More granular water usage reporting
- Automated home/away mode
- Integration with more smart home platforms
- Improved app responsiveness and stability


### Sub

[App page](https://appshunter.io/ios/app/sub-zero-group-owners-app/id1248991284)

This app enhances your kitchen experience by guiding you through recipes from websites and a curated collection. It allows remote control and monitoring of Sub-Zero refrigeration, Cove dishwashing, and Wolf appliances, ensuring optimal performance and convenience.

**Highlights:** Guided cooking from online recipes, Chef-tested recipes optimized for Wolf appliances, Remote dishwasher control and monitoring, Refrigerator settings and alerts, Filter recipes by cooking mode, Bookmark and share recipes

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🚀 Responsive and intuitive app
- 👍 Helpful notifications and alerts
- 🔒 Secure connection to appliances

**What reviewers complain about**

- 🐛 Frequent connection issues and disconnects
- 🔍 Lack of actual temperature monitoring
- 🤔 Confusing setup and pairing process
- 🔍 Missing key features like remote start

**Reported bugs**

- App crashes after recent updates
- Unable to log in or register account
- Appliances disappear from the app
- Firmware update failures brick appliances

**Requested features**

- Add support for Celsius temperature units
- Provide real-time temperature and energy consumption data
- Integrate with smart home platforms like Apple HomeKit


## Frequently asked questions

### Is Flo by Moen™ free?

Flo by Moen™ is free to download, with no in-app purchases.

### Is Sub free?

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

### Which has better reviews, Flo by Moen™ or Sub?

Sub is rated higher. Flo by Moen™ averages 4.0 out of 5 from 1.9K ratings, while Sub averages 4.4 from 778 ratings.

### Do Flo by Moen™ or Sub have ads?

Neither Flo by Moen™ nor Sub shows ads.

### Which is updated more often, Flo by Moen™ or Sub?

Flo by Moen™ ships an update every 2 months, and Sub every 5 weeks. Most recently, Flo by Moen™ was updated on September 23, 2026 and Sub on September 20, 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.*