# Eight Sleep vs Kixx

The clearest difference is review sentiment: Kixx at 100% against Eight Sleep's 28%. Kixx also leads on in-app purchases (none vs 4) and rating (5.0 vs 4.8). Eight Sleep's advantage is ratings volume (18K vs 7) and update cadence (every 3 days vs every 10 days). On price, ads and device support there is nothing between them.

Both are free to download. Eight Sleep sells 4 in-app purchases, starting at $10.00 per month. Kixx asks for nothing beyond the download.

Kixx holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Eight Sleep has 18K ratings behind it against 7, so its average is the more settled of the two. Written reviews point the same way: 28% of Eight Sleep's written reviews are positive against 100% of Kixx's.

Eight Sleep ships an update every 3 days, Kixx every 10 days. The most recent releases landed on October 24, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Eight Sleep | Kixx |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (18K ratings)](https://appshunter.io/ios/app/eight-sleep/id1086913845/reviews) | **[5.0 (7 ratings)](https://appshunter.io/ios/app/kixx/id6767332247/reviews)** |
| Number of ratings | **18K** | 7 |
| Positive reviews | 28.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 10 days |
| Monetization | Free with in-app purchases | **Free** |
| Size | 253 MB | 116 MB |
| Requires iOS | **17.0** | 26.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 12+ | 17+ |
| Developer | [Eight Sleep, Inc](https://appshunter.io/developer/1105586839) | [Synapse Social LLC](https://appshunter.io/developer/1769426157) |

## What reviewers say

### Eight Sleep

[App page](https://appshunter.io/ios/app/eight-sleep/id1086913845)

This intelligent sleep system actively manages your sleep environment by adjusting temperature and elevation. It tracks detailed sleep metrics and provides personalized insights to help you wake up feeling refreshed. The system supports individual sleep profiles for multiple users.

**Highlights:** Personalized temperature control, Automatic elevation adjustments, Sleep stage tracking, Heart rate and HRV monitoring, Snoring detection, Gentle wake-up alarms, Dual sleep profiles

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 8+ Standard (Monthly) | $10.00 | per month |
| 8+ Pro (Monthly) | $18.99 | per month |
| 8+ Standard (Annual) | $96.00 | per year |
| 8+ Pro (Annual) | $179.99 | per year |

**What reviewers like**

- 🚀 Amazing sleep quality
- 🌡️ Effective temperature control
- 📊 Detailed sleep tracking
- 🤖 Helpful AI features
- 🏆 Great customer service

**What reviewers complain about**

- 🐛 Buggy app with frequent crashes
- 🔌 Requires constant internet connection
- 🕰️ Alarm and temperature controls not intuitive
- 🔄 Inconsistent sleep data and metrics
- 💰 Expensive with mandatory subscription

**Reported bugs**

- App freezes and loses connection to pod
- Alarms not working or turning off properly
- Temperature settings not saving or resetting
- Sleep data not syncing or displaying accurately
- Frequent app crashes and performance issues

**Requested features**

- Apple Watch app integration
- Offline temperature/alarm controls
- Customizable sleep tracking and insights
- Improved alarm snooze/dismiss functionality
- Nap mode and more sleep schedule flexibility


### Kixx

[App page](https://appshunter.io/ios/app/kixx/id6767332247)

Turn your daily walks into a social competition. Track steps, climb leagues, and collect unique in-game items. Challenge friends to races and customize your experience with optional features.

**Highlights:** Step tracking via Apple Health, Weekly competitive leagues, Collectibles: Walkers and taunts, Friend challenges and duels, Optional GPS walk recording, Privacy controls and data management

**In-app purchases:** none


## Frequently asked questions

### Is Eight Sleep free?

Eight Sleep is free to download, with in-app purchases available.

### Is Kixx free?

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

### Which has better reviews, Eight Sleep or Kixx?

Kixx is rated higher. Eight Sleep averages 4.8 out of 5 from 18K ratings, while Kixx averages 5.0 from 7 ratings.

### Do Eight Sleep or Kixx have ads?

Neither Eight Sleep nor Kixx shows ads.

### Which is updated more often, Eight Sleep or Kixx?

Eight Sleep ships an update every 3 days, and Kixx every 10 days. Most recently, Eight Sleep was updated on October 24, 2026 and Kixx on October 14, 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.*