# Eight Sleep vs Solius

The clearest difference is review sentiment: Solius at 100% against Eight Sleep's 28%. Solius also leads on in-app purchases (none vs 4) and rating (5.0 vs 4.8). Eight Sleep's advantage is ratings volume (17K vs 70) and update cadence (every 4 days vs every 3 weeks). On price, ads, device support and iOS requirement there is nothing between them.

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

Solius holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Eight Sleep has 17K ratings behind it against 70, 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 Solius's.

Eight Sleep ships an update every 4 days, Solius every 3 weeks. The most recent releases landed on September 27, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | Eight Sleep | Solius |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (17K ratings)](https://appshunter.io/ios/app/eight-sleep/id1086913845/reviews) | **[5.0 (70 ratings)](https://appshunter.io/ios/app/solius/id6762333424/reviews)** |
| Number of ratings | **17K** | 70 |
| Positive reviews | 27.6% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 3 weeks |
| Monetization | Free with in-app purchases | **Free** |
| Size | 245 MB | 325 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [Eight Sleep, Inc](https://appshunter.io/developer/1105586839) | [Solius Labs, Inc.](https://appshunter.io/developer/1314011843) |

## 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


### Solius

[App page](https://appshunter.io/ios/app/solius/id6762333424)

This app pairs with a UVB light therapy device to deliver personalized doses of UVB light based on your skin tone. It offers guided sessions, reminders, and progress tracking for year-round health benefits. The device is FDA-cleared and requires no prescription.

**Highlights:** Personalized UVB dosing based on skin tone, FDA-cleared over-the-counter device, Short weekly sessions (approx. 5 minutes), Guided session setup and safety checks, Weekly reminders and progress tracking, Therapy history and trends

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Eight Sleep free?

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

### Is Solius free?

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

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

Solius is rated higher. Eight Sleep averages 4.8 out of 5 from 17K ratings, while Solius averages 5.0 from 70 ratings.

### Do Eight Sleep or Solius have ads?

Neither Eight Sleep nor Solius shows ads.

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

Eight Sleep ships an update every 4 days, and Solius every 3 weeks. Most recently, Eight Sleep was updated on September 27, 2026 and Solius on September 17, 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.*