# HUUM vs Sub

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.

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.

## The numbers

| Metric | HUUM | Sub |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.4 (28 ratings)](https://appshunter.io/ios/app/huum/id896161044/reviews) | **[4.4 (778 ratings)](https://appshunter.io/ios/app/sub-zero-group-owners-app/id1248991284/reviews)** |
| Number of ratings | 28 | **778** |
| Positive reviews | 10.7% of reviews | **14.7% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 5 weeks** |
| Monetization | **Free** | Ad-supported |
| Size | 66 MB | 69 MB |
| Requires iOS | 16.4 | **15.5** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [HUUM](https://appshunter.io/developer/896161047) | [Sub-Zero and Wolf](https://appshunter.io/developer/983988992) |

## What reviewers say

### HUUM

[App page](https://appshunter.io/ios/app/huum/id896161044)

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:** macOS Compatibility, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- ✅ Basic functionality works when stable
- 🎯 Simple on/off controls
- 📱 Remote control capability (when functioning)
- ⏱️ Scheduling feature available
- 🌡️ Temperature adjustment possible

**What reviewers complain about**

- 🐛 Extremely unreliable and buggy
- ❌ Frequent app crashes and freezes
- 🔌 Constant WiFi connectivity issues
- ⏱️ Long response delays (2-3 minutes)
- 🌍 Random language switching problems

**Reported bugs**

- 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

**Requested features**

- Apple Watch app support
- Dynamic Island integration
- Temperature reached notifications
- Ability to cancel/edit bookings
- Google Home/Alexa integration


### Sub

[App page](https://appshunter.io/ios/app/sub-zero-group-owners-app/id1248991284)

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:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🚀 Responsive and intuitive app
- 👍 Helpful notifications and alerts
- 🔒 Secure connection to appliances

**What reviewers complain about**

- 🐛 Frequent connection issues and disconnects
- 🔍 Lack of actual temperature monitoring
- 🤔 Confusing setup and pairing process
- 🔍 Missing key features like remote start

**Reported bugs**

- App crashes after recent updates
- Unable to log in or register account
- Appliances disappear from the app
- Firmware update failures brick appliances

**Requested features**

- Add support for Celsius temperature units
- Provide real-time temperature and energy consumption data
- Integrate with smart home platforms like Apple HomeKit


## Frequently asked 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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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*