# Sleep Cycle vs ATMÓS

Sleep Cycle and ATMÓS both sit at 4.7 stars, but that hides the real split: 100% of ATMÓS's written reviews are positive against 40% of Sleep Cycle's. Sleep Cycle's advantage is ratings volume (31K vs 5) and chart position (#47 vs unranked). On price, rating, ads and in-app purchases there is nothing between them.

Both are free to download. Sleep Cycle sells 9 in-app purchases, starting at $2.99 per month and ATMÓS sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.7 for Sleep Cycle against 4.8 for ATMÓS. That said, the two scores are not equally well evidenced: Sleep Cycle has 31K ratings behind it against 5, so its average is the more settled of the two. Written reviews are what separate them: 40% of Sleep Cycle's written reviews are positive against 100% of ATMÓS's.

Sleep Cycle ships an update weekly, ATMÓS fortnightly. The most recent releases landed on October 31, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Sleep Cycle | ATMÓS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (31K ratings)](https://appshunter.io/ios/app/sleep-cycle-tracker-and-sounds/id320606217/reviews) | **[4.8 (5 ratings)](https://appshunter.io/ios/app/atmos/id6761055879/reviews)** |
| Number of ratings | **31K** | 5 |
| Positive reviews | 39.5% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Fortnightly |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Best chart rank | **#47** | — |
| Size | 293 MB | 25 MB |
| Requires iOS | 16.2 | **15.0** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Sleep Cycle AB](https://appshunter.io/developer/320606220) | [Hiroya Tanaka](https://appshunter.io/developer/1887542375) |

## What reviewers say

### Sleep Cycle

[App page](https://appshunter.io/ios/app/sleep-cycle-tracker-and-sounds/id320606217)

**Currently charting:** #47 Top Grossing · Health & Fitness, #140 Top Free · Health & Fitness (US App Store)

This app uses sound analysis to track sleep patterns, identify potential issues, and build healthier sleep routines. It features an AI sleep coach, a smart alarm to wake you gently, and tools to record snoring and sleep talking.

**Highlights:** AI sleep coach, Smart Alarm clock, Sleep pattern tracking, Snore and cough detection, Sleep sounds library, Sleep analysis

**Features:** Apple Watch app, Vision Pro support, iPhone Duo support

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sleep Cycle Premium | $2.99 | per month |
| Premium | $9.99 | per year |
| Premium | $11.99 | per year |
| Premium | $19.99 | per year |
| Sleep Cycle Premium | $19.99 | per year |
| Premium | $29.99 | per year |
| Premium | $34.99 | per year |
| Premium: Unlock all features | $39.99 | per year |
| Sleep Cycle Premium | $57.99 | per year |

**What reviewers like**

- 🚀 Accurate sleep tracking
- 👍 Gentle alarm wakes you up during light sleep
- 📊 Detailed sleep data and insights
- 🌙 Soothing sleep aid sounds

**What reviewers complain about**

- 🐛 Alarm not always reliable, sometimes doesn't go off
- 🔋 High battery drain, especially on Apple Watch
- 💰 Expensive subscription model, limited free features
- 📉 Inaccurate sleep tracking in some cases

**Reported bugs**

- App crashes or stops recording sleep randomly
- Inconsistent time zone handling, causing alarm issues
- Microphone issues, unable to detect certain sounds

**Requested features**

- Ability to edit sleep data and notes
- Nap tracking and power nap functionality
- More customization options for alarms and sleep aid
- Improved integration with Apple Health and other devices


### ATMÓS

[App page](https://appshunter.io/ios/app/atmos/id6761055879)

Enhance sleep, focus, and relaxation with a personal ambient sound companion. Offers three modes: Sleep with a timer, Focus with binaural beats, and Weather with realistic nature sounds. Designed for distraction-free use.

**Highlights:** Sleep mode with auto-fade timer, Focus mode with binaural beats, Realistic weather soundscapes, High-quality ambient audio, Minimalist dark interface

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sleep Timer | $2.99 | one-time |


## Frequently asked questions

### Is Sleep Cycle free?

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

### Is ATMÓS free?

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

### Which has better reviews, Sleep Cycle or ATMÓS?

ATMÓS is rated higher. Sleep Cycle averages 4.7 out of 5 from 31K ratings, while ATMÓS averages 4.8 from 5 ratings.

### Do Sleep Cycle or ATMÓS have ads?

Neither Sleep Cycle nor ATMÓS shows ads.

### Which is updated more often, Sleep Cycle or ATMÓS?

Sleep Cycle ships an update weekly, and ATMÓS fortnightly. Most recently, Sleep Cycle was updated on October 31, 2026 and ATMÓS on October 10, 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.*