# Sub vs HOTRONIC Heat App

The clearest difference is rating: Sub at 4.4 against HOTRONIC Heat App's 3.0. Sub also leads on ads (none vs shown) and update cadence (every 5 weeks vs every 8 months). HOTRONIC Heat App's advantage is review sentiment (30% vs 15%) and iOS requirement (13.0 vs 15.5). On price, in-app purchases, monetization model and device support 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 3.0. That said, the two scores are not equally well evidenced: Sub has 788 ratings behind it against 13, so its average is the more settled of the two. Written reviews complicate that: 15% of Sub's written reviews are positive against 30% of HOTRONIC Heat App's, so the app with the better star average is not the one people write more warmly about.

Sub ships an update every 5 weeks, HOTRONIC Heat App every 8 months. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Sub | HOTRONIC Heat App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (788 ratings)](https://appshunter.io/ios/app/sub-zero-group-owners-app/id1248991284/reviews)** | [3.0 (13 ratings)](https://appshunter.io/ios/app/hotronic-heat-app/id1531887749/reviews) |
| Number of ratings | **788** | 13 |
| Positive reviews | 14.7% of reviews | **30.0% of reviews** |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 5 weeks** | Every 8 months |
| Monetization | Ad-supported | Ad-supported |
| Size | 69 MB | 14 MB |
| Requires iOS | 15.5 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Sub-Zero and Wolf](https://appshunter.io/developer/983988992) | [Wintersteiger AG](https://appshunter.io/developer/1531887751) |

## What reviewers say

### 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


### HOTRONIC Heat App

[App page](https://appshunter.io/ios/app/hotronic-heat-app/id1531887749)

Control your heated textiles with ease. Adjust heat levels, activate stand-by mode, and manage storage settings for your battery packs.

**Highlights:** Adjust heat levels, Stand-by mode, Storage mode, Battery pack control, Comfortable use

**In-app purchases:** none


## Frequently asked questions

### Is Sub free?

Sub is free to download, with no in-app purchases.

### Is HOTRONIC Heat App free?

HOTRONIC Heat App is free to download, with no in-app purchases.

### Which has better reviews, Sub or HOTRONIC Heat App?

Sub is rated higher. Sub averages 4.4 out of 5 from 788 ratings, while HOTRONIC Heat App averages 3.0 from 13 ratings.

### Do Sub or HOTRONIC Heat App have ads?

HOTRONIC Heat App shows ads; Sub does not.

### Which is updated more often, Sub or HOTRONIC Heat App?

Sub ships an update every 5 weeks, and HOTRONIC Heat App every 8 months. Most recently, Sub was updated on November 6, 2026 and HOTRONIC Heat App on November 3, 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.*