Comparison

HUUM vs Sub

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

Head to head
About

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.

Highlights
  • Remote sauna heating
  • Scheduled heating times
  • Calendar bookings
  • Temperature notifications
  • Mobile control
Features
Read full description

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.

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.

Screenshots

HUUM4 screens
Sub4 screens

Verdict

The call

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

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

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.

UpkeepUpdate frequency

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.

Scorecard4 real differences · 6 level
HUUM versus Sub: the parameters behind the verdict, then further details
ParameterHUUMSub
PriceFreeFree
Rating2.4 (28 ratings)4.4 (778 ratings) — better
Positive reviews10.7% of reviews14.7% of reviews — better
Number of ratings28778 — better
Update frequencyEvery 3 monthsEvery 5 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree — betterAd-supported
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.415.5 — better
Further details — not scored
Size66 MB69 MB
Age rating17+4+
DeveloperHUUMSub-Zero and Wolf

Customer experience

HUUM

All ratings28 ratings
Positive32.1%
Neutral7.1%
Negative60.7%
Written reviews206 reviews
Positive10.7%
Neutral4.4%
Negative85.0%

Sub

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

User reviews

HUUM

From 28 App Store ratings

What 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 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

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 more
  • 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 more
  • 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

None

HUUM

No in-app purchases

None

Sub

No in-app purchases

Questions

Is HUUM free?
HUUM is free to download, with no in-app purchases.
Is Sub free?
Sub is free to download, with no in-app purchases.
Which has better reviews, HUUM or Sub?
Sub is rated higher. HUUM averages 2.4 out of 5 from 28 ratings, while Sub averages 4.4 from 778 ratings.
Do HUUM or Sub have ads?
Neither HUUM nor Sub shows ads.
Which is updated more often, HUUM or Sub?
HUUM ships an update every 3 months, and Sub every 5 weeks. Most recently, HUUM was updated on October 14, 2026 and Sub on October 21, 2026.

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