# Sub vs Phyn

The clearest difference is review sentiment: Phyn at 52% against Sub's 15%. Phyn also leads on rating (4.7 vs 4.4) and monetization model (free vs ad-supported). On price, update cadence, ads and in-app purchases there is nothing between them.

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

Phyn holds the better App Store score, 4.7 against 4.4. Both are backed by a comparable volume of ratings — 778 and 2.7K respectively. Written reviews point the same way: 15% of Sub's written reviews are positive against 52% of Phyn's.

Sub ships an update every 5 weeks, Phyn every 3 weeks. The most recent releases landed on September 20, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | Sub | Phyn |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (778 ratings)](https://appshunter.io/ios/app/sub-zero-group-owners-app/id1248991284/reviews) | **[4.7 (2.7K ratings)](https://appshunter.io/ios/app/phyn/id1338894928/reviews)** |
| Number of ratings | 778 | **2.7K** |
| Positive reviews | 15.1% of reviews | **52.1% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 3 weeks** |
| Monetization | Ad-supported | **Free** |
| Size | 69 MB | 142 MB |
| Requires iOS | **15.5** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Sub-Zero and Wolf](https://appshunter.io/developer/983988992) | [PHYN LLC](https://appshunter.io/developer/1338894927) |

## What reviewers say

### 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


### Phyn

[App page](https://appshunter.io/ios/app/phyn/id1338894928)

Monitor your home's water usage, detect leaks with instant alerts, and run diagnostic checks to prevent costly damage. Get proactive warnings for freezing pipes and integrate with smart home devices for voice control.

**Highlights:** Real-time leak alerts, Plumbing diagnostic checks, Water usage tracking, Pre-freeze warnings, Smart home integration, Remote water shutoff (Phyn Plus)

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🚀 Excellent water leak detection
- 📊 Detailed water usage monitoring
- 🔒 Provides peace of mind and home protection
- 💰 Saves money on insurance and repairs

**What reviewers complain about**

- 🐛 Buggy and unreliable app
- 🔍 Poor water fixture identification
- 🕰️ Frequent app crashes and login issues
- 🤖 Overly aggressive automatic water shutoff

**Reported bugs**

- App freezes on splash screen
- Inability to clear old notifications
- Inconsistent water flow/pressure readings
- Automatic water shutoff issues

**Requested features**

- Export water usage data
- Customizable water usage alerts
- Integration with smart home platforms
- Improved pressure/temperature monitoring


## Frequently asked questions

### Is Sub free?

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

### Is Phyn free?

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

### Which has better reviews, Sub or Phyn?

Phyn is rated higher. Sub averages 4.4 out of 5 from 778 ratings, while Phyn averages 4.7 from 2.7K ratings.

### Do Sub or Phyn have ads?

Neither Sub nor Phyn shows ads.

### Which is updated more often, Sub or Phyn?

Sub ships an update every 5 weeks, and Phyn every 3 weeks. Most recently, Sub was updated on September 20, 2026 and Phyn on September 24, 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.*