# Eight Sleep vs Nothing But Flows

The clearest difference is device support: Nothing But Flows at 4 against Eight Sleep's 2. Nothing But Flows also leads on iOS requirement (15.1 vs 17.0). On price, ads and in-app purchases there is nothing between them.

Both are free to download. Eight Sleep sells 4 in-app purchases, starting at $10.00 per month and Nothing But Flows sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Eight Sleep | Nothing But Flows |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (18K ratings)](https://appshunter.io/ios/app/eight-sleep/id1086913845/reviews)** | — |
| Number of ratings | **18K** | — |
| Positive reviews | 28.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 days | — |
| Monetization | Free with in-app purchases | — |
| Size | 253 MB | 54 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 12+ | 4+ |
| Developer | [Eight Sleep, Inc](https://appshunter.io/developer/1105586839) | [Kevin Vu](https://appshunter.io/developer/6775266836) |

## 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


### Nothing But Flows

[App page](https://appshunter.io/ios/app/nothing-but-flows/id6775266834)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $4.99 | per month |
| Pro Annual | $49.99 | per year |


## Frequently asked questions

### Is Eight Sleep free?

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

### Is Nothing But Flows free?

Nothing But Flows is free to download, with in-app purchases available.

### Do Eight Sleep or Nothing But Flows have ads?

Neither Eight Sleep nor Nothing But Flows shows ads.

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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.*