Comparison

HUUM vs Control4 for OS 3

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

Control4 for OS 3

Transform your iPhone or iPad into a personal interface for your smart home. Control all connected devices, including lights, thermostats, security, and media, with a redesigned, personalized experience. Requires a Control4 Smart Home OS 3 system.

Highlights
  • Personalized user interface
  • Control lights, thermostats, security
  • Manage music and video
  • Access favorites and room-specific settings
  • Intuitive volume control
  • Customizable room wallpapers
Features
Read full description

This Control4 app is specifically designed to be used with Control4 Smart Homes running OS 3. It turns your iPhone or iPad into your personal user interface to control all your smart home devices. ------------ NOTE: Prior to using this app, your Control4 system must be updated to Control4 Smart Home OS 3 or later. If you are unsure of the software version on your system, check with your Control4 Dealer or login to your Control4 account at control4.com. ------------ Smart Home OS 3 was thoughtfully redesigned to make it more personal and the smart home OS of choice for families. It enables you to check on the status and control your entire smart home including music, video, lights, thermostats, security system, cameras, door locks, garage doors, pools, and much more. New features in OS 3 • Favorites give you fast access to the devices and sources that you use most • Quickly personalize the interface right from the app • Each room can have its own favorites for fast access to the things you use most • Hide icons that are less important, but easily access them through the room menu • Swipe between favorite rooms to quickly navigate around the home • Filtering lets you see all lights, locks and shades, or just those that are on, unlocked or open • All-new Active Media Bar shows what’s currently playing and gives you fast control of media • Easily adjust volume through a new, intuitive volume slider control • Background wallpapers for each room can now be easily changed right from the app Visit Control4.com to learn more, find a showroom near you, or find a independent professional integrator.

Screenshots

HUUM4 screens
Control4 for OS 34 screens

Verdict

The call

The clearest difference is rating: Control4 for OS 3 at 3.0 against HUUM's 2.3. Control4 for OS 3 also leads on ratings volume (576 vs 29) and review sentiment (22% vs 11%). HUUM's advantage is iOS requirement (16.4 vs 18.0). On price, ads, in-app purchases and monetization model 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

Control4 for OS 3 holds the better App Store score, 3.0 against 2.3. That said, the two scores are not equally well evidenced: Control4 for OS 3 has 576 ratings behind it against 29, 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 22% of Control4 for OS 3's.

UpkeepUpdate frequency

HUUM ships an update monthly, Control4 for OS 3 fortnightly. The most recent releases landed on October 24, 2026 and October 21, 2026 respectively.

Scorecard5 real differences · 5 level
HUUM versus Control4 for OS 3: the parameters behind the verdict, then further details
ParameterHUUMControl4 for OS 3
PriceFreeFree
Rating2.3 (29 ratings)3.0 (576 ratings) — better
Positive reviews10.6% of reviews21.9% of reviews — better
Number of ratings29576 — better
Update frequencyMonthlyFortnightly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPadiPhone, iPad, Apple Watch — better
Requires iOS16.4 — better18.0
Further details — not scored
Size66 MB207 MB
Age rating17+4+
DeveloperHUUMSnap One, LLC

Customer experience

HUUM

All ratings29 ratings
Positive31.0%
Neutral6.9%
Negative62.1%
Written reviews207 reviews
Positive10.6%
Neutral4.3%
Negative85.0%

Control4 for OS 3

All ratings573 ratings
Positive46.4%
Neutral7.7%
Negative45.9%
Written reviews274 reviews
Positive21.9%
Neutral7.7%
Negative70.4%

User reviews

HUUM

From 29 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

Control4 for OS 3

From 576 App Store ratings

What we love

  • 🚀 Responsive and fast
  • 🌟 Elegant and modern UI
  • 🔒 Robust security features
  • 👍 Customizable and personalized
  • 🎨 Improved visual design

Room to improve

  • 🐛 Frequent crashes and bugs
  • ⏱️ Slow load times and reconnections
  • 🔌 Unreliable connectivity
  • 🤖 Lacking integration with smart home platforms
  • 💰 Expensive and costly to maintain

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

Control4 for OS 3

Reported bugs

5 issues
  • Intercom and doorbell issues
  • Thermostat controls not working as expected
  • Inability to connect to the system remotely
  • Compatibility problems with newer iOS versions
  • Unexpected app crashes and freezes

Requested features

5 requests
  • Apple Watch app support
  • Better integration with Apple ecosystem
  • Improved voice control and Alexa integration
  • More customization options for users
  • Faster and more responsive app performance

In-app purchases

None

HUUM

No in-app purchases

None

Control4 for OS 3

No in-app purchases

Questions

Is HUUM free?
HUUM is free to download, with no in-app purchases.
Is Control4 for OS 3 free?
Control4 for OS 3 is free to download, with no in-app purchases.
Which has better reviews, HUUM or Control4 for OS 3?
Control4 for OS 3 is rated higher. HUUM averages 2.3 out of 5 from 29 ratings, while Control4 for OS 3 averages 3.0 from 576 ratings.
Do HUUM or Control4 for OS 3 have ads?
Neither HUUM nor Control4 for OS 3 shows ads.
Which is updated more often, HUUM or Control4 for OS 3?
HUUM ships an update monthly, and Control4 for OS 3 fortnightly. Most recently, HUUM was updated on October 24, 2026 and Control4 for OS 3 on October 21, 2026.

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