Z Control vs Sub
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Z Control
Monitor and manage your property's flood protection systems remotely. Receive real-time alerts, test equipment, silence alarms, and customize settings for peace of mind.
- Real-time flood alerts
- Remote equipment testing
- Silence alarms
- Manage preferences
- Adjust settings
- Monitor sump pump systems
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Z Control products protect your property from flooding. With the Z Control app, you can receive alerts, remotely test equipment, silence alarms, manage preferences, and adjust settings. Compatible with the following Z Control Enabled devices: Zoeller Aquanot Fit 508 DC Sump Pump System Zoeller APak Indoor High Water Alarm Z Control Wi-Fi Gateway Flint and Walling Commander Pro VFD system Tulsar Sentry Indoor High Water Alarm Zoeller Basement Sentry Plus DC Sump Pump System Zoeller Basement Sentry Platinum DC Sump Pump System Zoeller Basement Sentry Intelligent Sump Pump
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.
- 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
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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.
Screenshots
Verdict
The clearest difference is rating: Sub at 4.4 against Z Control's 2.4. Sub also leads on ratings volume (788 vs 74). Z Control's advantage is monetization model (free vs ad-supported) and review sentiment (23% vs 15%). 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
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 2.4. That said, the two scores are not equally well evidenced: Sub has 788 ratings behind it against 74, so its average is the more settled of the two. Written reviews complicate that: 23% of Z Control'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.
Z Control ships an update every 6 weeks, Sub every 5 weeks. The most recent releases landed on November 1, 2026 and November 6, 2026 respectively.
| Parameter | Z Control | Sub |
|---|---|---|
| Price | Free | Free |
| Rating | 2.4 (74 ratings) | 4.4 (788 ratings) — better |
| Positive reviews | 23.3% of reviews — better | 14.7% of reviews |
| Number of ratings | 74 | 788 — better |
| Update frequency | Every 6 weeks | Every 5 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Ad-supported |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.2 — better | 15.5 |
| Further details — not scored | ||
| Size | 49 MB | 69 MB |
| Age rating | 4+ | 4+ |
| Developer | Zoeller Company | Sub-Zero and Wolf |
Customer experience
Z Control
Sub
User reviews
Z Control
From 74 App Store ratingsWhat we love
- ✅ Provides peace of mind
- ✅ Automatic weekly testing
- ✅ Notifies of power outages
- ✅ Alerts for high water
- ✅ Reliable monitoring tool
Room to improve
- ❌ Extremely basic functionality
- ❌ Zero run history
- ❌ Lazy app support link
- ❌ No in-app support/feedback
- ❌ Cannot log in
Sub
From 788 App Store ratingsWhat 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
Bugs and requests
Z Control
Reported bugs
15 issues- App crashes on launch
- App crashes during registration/login
- Login loop errors
- Password reset emails not received
- Wi-Fi connection issues
Show 10 moreShow fewer
- Device not recognized
- Shared devices not appearing
- Notifications delayed or not sent
- Inability to adjust dates (battery install, self-test)
- App not compatible with certain Wi-Fi networks
- App crashes after updates
- Unable to sign in after online account creation
- App crashes after login
- Unable to add previously set up device
- App crashes immediately upon opening
Requested features
13 requests- Add run history
- Add in-app support/feedback mechanisms
- Improve Wi-Fi connectivity
- Fix login issues
- Fix password reset email delivery
Show 8 moreShow fewer
- Allow adjustment of battery install date
- Fix self-test date display
- Improve notification delivery speed
- Provide analytics and insight into pump performance
- Allow device sharing to work correctly
- Provide direct customer/tech support contact within the app
- Make the app more intuitive
- Provide advanced notice of pump failure
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
In-app purchases
Z Control
No in-app purchases
Sub
No in-app purchases









