Comparison

Sub vs GreenTech Connect

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

GreenTech Connect

Control your GreenTech products remotely. Adjust settings, monitor air quality, and manage component life from your smartphone. Schedule features like Night Mode for optimal comfort.

Highlights
  • Remote product control
  • Monitor air quality
  • Adjust purification levels
  • Manage component life
  • Schedule Night Mode
  • Receive product notifications
Features
Read full description

GreenTech Connect gives you control of your GreenTech products from anywhere. Add, manage and control multiple GreenTech products with ease. Set your ideal purification levels on your way home from work, or put a unit into Night Mode from the comfort of your bed. See up-to-date information including current settings, air quality, room temperature and humidity, component lifetime and more, depending on your product. Connect your GreenTech Air Purifier to*: - Review/Adjust Unit Settings (Fan Speed, Purification Level, Modes, etc.) - Review current indoor and outdoor temperature and humidity - Review/Reset Filter, ARC® Cell, and other component life - Create a Night Mode Schedule - Receive important product related notifications *Settings and app functionality may change depending on your unit’s model. GreenTech Environmental is a leader in air purification systems, best known for its proprietary air purification technology, Active Radiant Catalysis (ARC®), which continuously and actively purifies the air and surfaces in homes and commercial buildings across the United States. In addition to our air purification systems, we offer products to improve air circulation, heating, power management, and laundry efficiency. Need Support? For any parts, maintenance, or support, contact our team: info@greentechenv.com or visit www.greentechenv.com

Screenshots

Sub4 screens
GreenTech Connect4 screens

Verdict

The call

The clearest difference is update cadence: Sub at every 5 weeks against GreenTech Connect's every 16 months. Sub also leads on ratings volume (786 vs 13) and review sentiment (15% vs 0%). GreenTech Connect's advantage is monetization model (free vs ad-supported) and iOS requirement (11.0 vs 15.5). On price, rating, 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

GreenTech Connect holds the better App Store score, 4.5 against 4.4. That said, the two scores are not equally well evidenced: Sub has 786 ratings behind it against 13, so its average is the more settled of the two. Written reviews complicate that: 15% of Sub's written reviews are positive against 0% of GreenTech Connect's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Sub ships an update every 5 weeks, GreenTech Connect every 16 months. Both last shipped on October 24, 2026.

Scorecard5 real differences · 5 level
Sub versus GreenTech Connect: the parameters behind the verdict, then further details
ParameterSubGreenTech Connect
PriceFreeFree
Rating4.4 (786 ratings)4.5 (13 ratings) — better
Positive reviews14.7% of reviews — better0.0% of reviews
Number of ratings786 — better13
Update frequencyEvery 5 weeks — betterEvery 16 months
AdsNoNo
In-app purchasesNoNo
MonetizationAd-supportedFree — better
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.511.0 — better
Further details — not scored
Size69 MB175 MB
Age rating4+4+
DeveloperSub-Zero and WolfGreenTech Environmental, LLC

Customer experience

Sub

All ratings778 ratings
Positive85.1%
Neutral3.0%
Negative12.0%
Written reviews177 reviews
Positive14.7%
Neutral8.5%
Negative76.8%

GreenTech Connect

All ratings13 ratings
Positive84.6%
Neutral7.7%
Negative7.7%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

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

GreenTech Connect

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Sub

No in-app purchases

None

GreenTech Connect

No in-app purchases

Questions

Is Sub free?
Sub is free to download, with no in-app purchases.
Is GreenTech Connect free?
GreenTech Connect is free to download, with no in-app purchases.
Which has better reviews, Sub or GreenTech Connect?
GreenTech Connect is rated higher. Sub averages 4.4 out of 5 from 786 ratings, while GreenTech Connect averages 4.5 from 13 ratings.
Do Sub or GreenTech Connect have ads?
Neither Sub nor GreenTech Connect shows ads.
Which is updated more often, Sub or GreenTech Connect?
Sub ships an update every 5 weeks, and GreenTech Connect every 16 months. Most recently, Sub was updated on October 24, 2026 and GreenTech Connect on October 24, 2026.

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