# Sub vs Tempur® Sleeptracker

The clearest difference is review sentiment: Tempur® Sleeptracker at 37% against Sub's 15%. Tempur® Sleeptracker also leads on rating (4.7 vs 4.4) and ratings volume (32K vs 778). Sub's advantage is update cadence (every 5 weeks vs every 3 months) and iOS requirement (15.5 vs 17.5). 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.

Tempur® Sleeptracker holds the better App Store score, 4.7 against 4.4. That said, the two scores are not equally well evidenced: Tempur® Sleeptracker has 32K ratings behind it against 778, so its average is the more settled of the two. Written reviews point the same way: 15% of Sub's written reviews are positive against 37% of Tempur® Sleeptracker's.

Sub ships an update every 5 weeks, Tempur® Sleeptracker every 3 months. The most recent releases landed on September 20, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | Sub | Tempur® Sleeptracker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (778 ratings)](https://appshunter.io/ios/app/sub-zero-group-owners-app/id1248991284/reviews) | **[4.7 (32K ratings)](https://appshunter.io/ios/app/tempur-sleeptracker-ai/id1634707821/reviews)** |
| Number of ratings | 778 | **32K** |
| Positive reviews | 15.1% of reviews | **37.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 3 months |
| Monetization | Ad-supported | **Free** |
| Size | 69 MB | 98 MB |
| Requires iOS | **15.5** | 17.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Sub-Zero and Wolf](https://appshunter.io/developer/983988992) | [Fullpower®](https://appshunter.io/developer/282995850) |

## 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


### Tempur® Sleeptracker

[App page](https://appshunter.io/ios/app/tempur-sleeptracker-ai/id1634707821)

This app analyzes your sleep patterns without requiring you to wear anything. It provides detailed sleep graphs, metrics like heart rate and respiration, and personalized AI-driven tips to help you improve your sleep quality. Wake up refreshed with its smart alarm feature.

**Highlights:** AI Sleep Coach with personalized tips, Respiration and heart rate monitoring, Sleep cycle alarm, Automatic sleep monitoring, Detailed sleep graphs and metrics, Apple Health integration

**In-app purchases:** none

**What reviewers like**

- 🚀 Excellent sleep tracking and analysis
- 👍 Detailed sleep reports and insights
- 🤖 Useful AI-powered features
- 🛋️ Seamless integration with adjustable base
- 💤 Helps improve sleep quality

**What reviewers complain about**

- 🐛 Inaccurate sleep tracking and data
- 🔌 Frequent WiFi disconnections
- 🤯 Buggy and laggy app performance
- 🤖 AI and sleep analysis not as advanced as claimed
- 🔒 Privacy concerns with data collection

**Reported bugs**

- Sleep recording not stopping when getting out of bed
- Firmware update issues and connection problems
- Remote control function lags and freezes
- Sleep cycle alarm not working as expected
- Inconsistent data reporting and missing sleep entries

**Requested features**

- Local API for sensors and control
- Customizable wave forms and relaxation modes
- Apple Watch integration for remote control
- Improved multi-sleeper detection and tracking
- Better accessibility and usability for vision-impaired users


## Frequently asked questions

### Is Sub free?

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

### Is Tempur® Sleeptracker free?

Tempur® Sleeptracker is free to download, with no in-app purchases.

### Which has better reviews, Sub or Tempur® Sleeptracker?

Tempur® Sleeptracker is rated higher. Sub averages 4.4 out of 5 from 778 ratings, while Tempur® Sleeptracker averages 4.7 from 32K ratings.

### Do Sub or Tempur® Sleeptracker have ads?

Neither Sub nor Tempur® Sleeptracker shows ads.

### Which is updated more often, Sub or Tempur® Sleeptracker?

Sub ships an update every 5 weeks, and Tempur® Sleeptracker every 3 months. Most recently, Sub was updated on September 20, 2026 and Tempur® Sleeptracker on September 25, 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.*