HUUM vs Sub
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
HUUM
Control your sauna remotely with this app. Schedule heating times and receive notifications when your sauna reaches the desired temperature, ensuring a perfectly heated experience upon arrival.
- Remote sauna heating
- Scheduled heating times
- Calendar bookings
- Temperature notifications
- Mobile control
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Your sauna, ready when you are. The HUUM app puts full control of your sauna in your pocket. Heat it up on your way home, fine-tune the temperature from the bench, and keep an eye on every session wherever you are. WHAT YOU CAN DO • Start, stop, and adjust your sauna remotely • Set the exact target temperature and session duration • Schedule sessions by day, time, and temperature, including recurring bookings • Watch live status, current and target temperature, and heating progress • Manage multiple saunas from a single view • Track your sauna hours and browse your full session history • Get clear, real-time alerts for doors, connection, and safety BUILT FOR SAFETY Remote start is enabled only when your sauna's safety is confirmed through the UKU control panel, so you stay in control at all times. Works with HUUM saunas equipped with the UKU controller and a Wi-Fi connection. Less fiddling. More leil.
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 HUUM's 2.4. Sub also leads on ratings volume (778 vs 28) and update cadence (every 5 weeks vs every 3 months). HUUM's advantage is monetization model (free vs ad-supported). On price, review sentiment, 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 778 ratings behind it against 28, so its average is the more settled of the two. Written reviews point the same way: 11% of HUUM's written reviews are positive against 15% of Sub's.
HUUM ships an update every 3 months, Sub every 5 weeks. The most recent releases landed on October 14, 2026 and October 21, 2026 respectively.
| Parameter | HUUM | Sub |
|---|---|---|
| Price | Free | Free |
| Rating | 2.4 (28 ratings) | 4.4 (778 ratings) — better |
| Positive reviews | 10.7% of reviews | 14.7% of reviews — better |
| Number of ratings | 28 | 778 — better |
| Update frequency | Every 3 months | Every 5 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Ad-supported |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 16.4 | 15.5 — better |
| Further details — not scored | ||
| Size | 66 MB | 69 MB |
| Age rating | 17+ | 4+ |
| Developer | HUUM | Sub-Zero and Wolf |
Customer experience
HUUM
Sub
User reviews
HUUM
From 28 App Store ratingsWhat we love
- ✅ Basic functionality works when stable
- 🎯 Simple on/off controls
- 📱 Remote control capability (when functioning)
- ⏱️ Scheduling feature available
- 🌡️ Temperature adjustment possible
Room to improve
- 🐛 Extremely unreliable and buggy
- ❌ Frequent app crashes and freezes
- 🔌 Constant WiFi connectivity issues
- ⏱️ Long response delays (2-3 minutes)
- 🌍 Random language switching problems
Sub
From 778 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
HUUM
Reported bugs
21 issues- App randomly switches to Estonian/Finnish/Swedish
- Temperature control stops working after updates
- Scheduler/timer functionality broken
- Remote start feature randomly disables
- App won't open or becomes unresponsive
Show 16 moreShow fewer
- Login loops and credential rejection
- Door sensor falsely reports 'door open'
- Sauna turns off mid-heating without reason
- Light controls unresponsive or delayed
- Calendar/scheduling closes app
- Password reset emails don't work
- App incompatible with latest iOS versions
- Notifications not working on newer phones
- Sauna ID retrieval issues
- Temperature scroll functionality broken
- Auto-start toggle disabled but still visible
- Unexpected €420-500 charges during setup
- App logs out on every action
- Duplicate commands cause unexpected behavior
- Modal pages get stuck and freeze app
- Repeat scheduling function inaccurate
Requested features
12 requests- Apple Watch app support
- Dynamic Island integration
- Temperature reached notifications
- Ability to cancel/edit bookings
- Google Home/Alexa integration
Show 7 moreShow fewer
- Better visual feedback for on/off status
- In-app help documentation and instructions
- Language selection button always visible
- Advanced statistics and analytics
- User community map feature
- Persistent language preference storage
- Confirmation dialogs for critical actions
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
HUUM
No in-app purchases
Sub
No in-app purchases









