Comparison

Sub vs Phyn

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Sub

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
Read full description

Elevate your kitchen experience with the Sub-Zero Group Owner’s App. Connect your Wi-Fi-enabled appliances and enjoy greater control, personalized cooking, and now, integrated wine inventory management. • Build and manage your wine collection • Scan bottles to quickly add wines to your inventory • Track where each bottle is stored across locations • Organize your collection with filters, groups, and tags • View inventory history as wines are enjoyed over time • Enjoy a guided cooking experience with recipes tailored to your appliances • Set timers and view oven status directly from recipe steps • Monitor and control your appliances from anywhere • Receive notifications for appliance status, maintenance, and more The app also gives you powerful control over your Sub-Zero refrigeration and Cove dishwashing appliances. Start your dishwasher remotely, monitor cycles, and manage supplies Wine Inventory transforms a traditionally manual task into a simple, intuitive experience. Manage your collection, understand where your wines are stored, and stay connected to your kitchen in one place. Download now and get more from every Sub-Zero, Wolf, and Cove appliance.

About

Phyn

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
Read full description

Phyn lets you speak the language of water. From the free Phyn app you can understand how much water your family uses and where they are using it the most. Get alerted the minute a leak issue occurs and run diagnostic "Plumbing Checks" to proactively catch tiny leaks before they become big problems. PHYN SMART WATER ASSISTANT Leak alerts: SMS and push notifications alert you at the first sign of a possible issue. Take action by connecting to a HomeAdvisor plumber in minutes through the app. Plumbing Checks: Turn off your water at the main and run Phyn’s Plumbing Check feature. In minutes Phyn will detect pinhole leaks and poor seals in your water system. Water Use Plus: Track and view your water use daily and monthly to get ahead of your water costs, and see how your home compares to others. Over time, Phyn learns your system and communicates your water usage down to each fixture. See every water event in your home so you can teach Phyn about your water use. Pre-Freeze Warnings: Phyn’s patented pressure sensing sees the ice crystals forming in your pipes before they have a chance to freeze and burst, giving you precious time to take action and avoid damage. Smart Home Integrated: Use voice commands to learn about your water use. Phyn works seamlessly with Amazon Alexa and Google Assistant. And with IFTTT you can have Phyn trigger actions with other smart home devices. Manage multiple properties Monitor water use and receive leak alerts for up to 6 properties from one account in the Phyn app. PHYN PLUS SMART WATER ASSISTANT + SHUTOFF Auto and Remote Water Shutoff: After Phyn learns about your home’s water use, it can turn your water off automatically to prevent damage from leaks. You also have the choice to turn your water off yourself via the app, from anywhere. Leak alerts: Phyn constantly monitors your home for leaks and potentially harmful changes in pressure and temperature. As soon as an issue is detected, Phyn sends you SMS and push notifications to tell you what is happening and gives you the power to turn your water off to mitigate water damage. Water Use: Stay ahead of your water bill. Graph views of your monthly, daily and even hourly water use. Water Use Plus: Track and view your water use daily and monthly and see how your home compares to others. Phyn learns about your plumbing system and communicates your water usage to each fixture type (showers, sinks, toilets, etc…). See every water event in your home so you can teach Phyn about your water use. Plumbing Checks: Phyn automatically runs daily diagnostic checks to give you and your plumber insights into your plumbing so that you can ensure that your system is watertight. Smart Home Integrated: Use voice commands to learn about your water use and control your shutoff valve. Phyn works seamlessly with Amazon Alexa and Google Assistant. And with IFTTT you can have Phyn trigger actions with other smart home devices. Manage multiple properties: Monitor water use and receive leak alerts for up to 6 properties from one account in the Phyn app.

Screenshots

Sub4 screens
Phyn4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

Sub ships an update every 5 weeks, Phyn every 3 weeks. The most recent releases landed on September 20, 2026 and September 22, 2026 respectively.

Scorecard4 real differences · 6 level
Sub versus Phyn: the parameters behind the verdict, then further details
ParameterSubPhyn
PriceFreeFree
Rating4.4 (778 ratings)4.7 (2.7K ratings) — better
Positive reviews15.1% of reviews52.1% of reviews — better
Number of ratings7782.7K — better
Update frequencyEvery 5 weeksEvery 3 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationAd-supportedFree — better
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.5 — better16.0
Further details — not scored
Size69 MB142 MB
Age rating4+4+
DeveloperSub-Zero and WolfPHYN LLC

Customer experience

Sub

All ratings778 ratings
Positive85.1%
Neutral3.0%
Negative12.0%
Written reviews172 reviews
Positive15.1%
Neutral8.7%
Negative76.2%

Phyn

All ratings2,660 ratings
Positive93.9%
Neutral1.8%
Negative4.3%
Written reviews167 reviews
Positive52.1%
Neutral12.0%
Negative35.9%

User reviews

Sub

From 778 App Store ratings

What we love

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

Room to improve

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

Phyn

From 2.7K App Store ratings

What we love

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

Room to improve

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

Bugs and requests

Sub

Reported bugs

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

Requested features

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

Phyn

Reported bugs

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

Requested features

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

In-app purchases

None

Sub

No in-app purchases

None

Phyn

No in-app purchases

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 22, 2026.

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