# Nu vs Sub

The clearest difference is update cadence: Sub at every 5 weeks against Nu's every 12 months. Sub also leads on review sentiment (15% vs 0%). Nu's advantage is monetization model (free vs ad-supported) and iOS requirement (7.0 vs 15.5). On price, ads, in-app purchases 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.

Nu ships an update every 12 months, Sub every 5 weeks. The most recent releases landed on October 18, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Nu | Sub |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.4 (786 ratings)](https://appshunter.io/ios/app/sub-zero-group-owners-app/id1248991284/reviews)** |
| Number of ratings | — | **786** |
| Positive reviews | 0.0% of reviews | **14.7% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 12 months | **Every 5 weeks** |
| Monetization | **Free** | Ad-supported |
| Size | 18 MB | 69 MB |
| Requires iOS | **7.0** | 15.5 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Nu-Heat](https://appshunter.io/developer/553854204) | [Sub-Zero and Wolf](https://appshunter.io/developer/983988992) |

## What reviewers say

### Nu

[App page](https://appshunter.io/ios/app/nu-heat-smartstat/id1081834864)

Control your home's heating and hot water remotely with this WiFi-connected thermostat app. Manage multiple locations and devices, set schedules, and monitor live temperatures from your smartphone to save energy and ensure comfort.

**Highlights:** Remote heating and hot water control, Geo-location and Home/Away modes, Multi-location and multi-device management, Temperature hold and PIN lock, Program heating and hot water times, View live temperature, Auto firmware updates

**In-app purchases:** none


### 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 Nu free?

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

### Is Sub free?

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

### Do Nu or Sub have ads?

Neither Nu nor Sub shows ads.

### Which is updated more often, Nu or Sub?

Nu ships an update every 12 months, and Sub every 5 weeks. Most recently, Nu was updated on October 18, 2026 and Sub on October 24, 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.*