Comparison

Nu vs Sub

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

Head to head
About

Nu

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
Read full description

The Nu-Heat SmartStat is a WiFi Connected Thermostat that connects directly to your home router. Easy Setup - no need to change any router settings. Nu-Heat's SmartStat can work as a thermostat or timer - so those looking to control heating and hot water would require 2 SmartStats - one to replace their existing thermostat and the other to replace the programmer. The Nu-Heat OneZone™ SmartStat App Offers: - Geo Location Feature - Multi Location in One App - (Main Home & Holiday Home) - Multi Device Control - Apply Temperature Hold to a single zone - Apply PIN Number Lock to a single zone - Home / Away Facility  - Holiday Facility - Program Heating and Hot Water Times - View Live Temperature from your home on your smartphone - Auto Firmware Update - Internet Clock Sync (Summer/Winter Time Correction)  NU-HEAT ONEZONE SMARTSTAT APP - COMING OR GOING? The Nu-Heat OneZone™ SmartStat App allows you to instantly switch your heating and hot water controls ON or OFF directly on your smartphone or tablet. Not only will this save money, it ensures your home is always warm and welcoming when you arrive. Better still, the SmartStat will automatically activate your heating if the frost set temperature is reached; keeping your home safe and dry without wasting any unnecessary energy.

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

Nu2 screens
Sub4 screens

Verdict

The call

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.

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.

UpkeepUpdate frequency

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.

Scorecard4 real differences · 6 level
Nu versus Sub: the parameters behind the verdict, then further details
ParameterNuSub
PriceFreeFree
Rating—4.4 (786 ratings) — better
Positive reviews0.0% of reviews14.7% of reviews — better
Number of ratings—786 — better
Update frequencyEvery 12 monthsEvery 5 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree — betterAd-supported
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS7.0 — better15.5
Further details — not scored
Size18 MB69 MB
Age rating4+4+
DeveloperNu-HeatSub-Zero and Wolf

Customer experience

Nu

Written reviews8 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Sub

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

Bugs and requests

Nu

Not enough reviews yet to summarise bugs or requests.

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

Nu

No in-app purchases

None

Sub

No in-app purchases

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.

Other comparisons