# Eight Sleep vs Molekule

The clearest difference is in-app purchases: Molekule at none against Eight Sleep's 4. Molekule also leads on iOS requirement (15.5 vs 17.0). Eight Sleep's advantage is update cadence (every 4 days vs every 2 months) and rating (4.8 vs 4.4). On price, ratings volume, 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. Molekule asks for nothing beyond the download.

Eight Sleep holds the better App Store score, 4.8 against 4.4. Both are backed by a comparable volume of ratings — 17K and 11K respectively. Written reviews point the same way: 27% of Eight Sleep's written reviews are positive against 17% of Molekule's.

Eight Sleep ships an update every 4 days, Molekule every 2 months. The most recent releases landed on September 25, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | Eight Sleep | Molekule |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (17K ratings)](https://appshunter.io/ios/app/eight-sleep/id1086913845/reviews)** | [4.4 (11K ratings)](https://appshunter.io/ios/app/molekule/id1219881640/reviews) |
| Number of ratings | **17K** | 11K |
| Positive reviews | **27.3% of reviews** | 17.2% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 2 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 245 MB | 112 MB |
| Requires iOS | 17.0 | **15.5** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Eight Sleep, Inc](https://appshunter.io/developer/1105586839) | [MOLEKULE GROUP, INC.](https://appshunter.io/developer/1219881639) |

## 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


### Molekule

[App page](https://appshunter.io/ios/app/molekule/id1219881640)

This app connects to advanced air purifiers and humidifiers, offering real-time air quality monitoring and control. It allows users to track filter status, schedule operation, and utilize features like dark mode for a healthier home environment.

**Highlights:** PECO technology air purification, Real-time air quality sensing, Filter status tracking, Dark mode scheduler, Reliable cloud connection, Control multiple devices

**In-app purchases:** none

**What reviewers like**

- 🚀 Remote operating
- 🌟 Great air purifier
- 👍 Sleek design
- 💨 Helps with allergies

**What reviewers complain about**

- 🐛 Buggy app
- 🔌 Connectivity issues
- 🕰️ Unreliable filter status
- 📱 Useless app
- 🤯 Frustrating setup

**Reported bugs**

- App crashes frequently
- Inability to change app language
- Devices randomly disconnecting from app
- Inaccurate filter life reporting

**Requested features**

- Scheduling options for auto mode
- Ability to order filters directly from app
- Improved app stability and reliability


## Frequently asked questions

### Is Eight Sleep free?

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

### Is Molekule free?

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

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

Eight Sleep is rated higher. Eight Sleep averages 4.8 out of 5 from 17K ratings, while Molekule averages 4.4 from 11K ratings.

### Do Eight Sleep or Molekule have ads?

Neither Eight Sleep nor Molekule shows ads.

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

Eight Sleep ships an update every 4 days, and Molekule every 2 months. Most recently, Eight Sleep was updated on September 25, 2026 and Molekule on September 24, 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.*