# Cycle Tracking vs Sleep Details

The clearest difference is rating: Sleep Details at 4.4 against Cycle Tracking's 2.9. Sleep Details also leads on update cadence (every 2 months vs every 11 months) and ratings volume (1.1K vs 28). Cycle Tracking's advantage is in-app purchases (none vs 3) and iOS requirement (13.0 vs 18). On price, review sentiment, ads and device support there is nothing between them.

Both are free to download. Sleep Details sells 3 in-app purchases, starting at $2.99 per month. Cycle Tracking asks for nothing beyond the download.

Sleep Details holds the better App Store score, 4.4 against 2.9. That said, the two scores are not equally well evidenced: Sleep Details has 1.1K ratings behind it against 28, so its average is the more settled of the two. Written reviews point the same way: 45% of Cycle Tracking's written reviews are positive against 50% of Sleep Details's.

Cycle Tracking ships an update every 11 months, Sleep Details every 2 months. Both last shipped on October 24, 2026.

## The numbers

| Metric | Cycle Tracking | Sleep Details |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.9 (28 ratings)](https://appshunter.io/ios/app/cycle-tracking/id1459548214/reviews) | **[4.4 (1.1K ratings)](https://appshunter.io/ios/app/sleep-details/id1534838758/reviews)** |
| Number of ratings | 28 | **1.1K** |
| Positive reviews | 45.5% of reviews | **50.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 11 months | **Every 2 months** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 3 MB | 29 MB |
| Requires iOS | **13.0** | 18 |
| Devices | **iPhone, iPod, Apple Watch** | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Apple](https://appshunter.io/developer/284417353) | [Sydvesti Oy](https://appshunter.io/developer/912783647) |

## What reviewers say

### Cycle Tracking

[App page](https://appshunter.io/ios/app/cycle-tracking/id1459548214)

This app helps you discreetly track your menstrual cycle, including flow, symptoms, and fertility. Receive timely notifications for your period and fertile windows, with data syncing to your iPhone's Health app.

**Highlights:** Daily log for flow, symptoms, and fertility, Track ovulation test results and BBT, Period and fertile window predictions, Pregnancy tracking and gestational age, Customizable period and fertile window notifications, Cycle history and statistics in Health app, Encrypted health data with iCloud sync

**Features:** Apple Watch app

**In-app purchases:** none


### Sleep Details

[App page](https://appshunter.io/ios/app/sleep-details/id1534838758)

Track your sleep data and receive a daily sleep score based on information from your Apple Watch. Gain insights into sleep stages, heart rate, and more, with personalized ratings and factor tagging. Features a memory test and daily summaries for enhanced understanding of your sleep's impact.

**Highlights:** Daily sleep score, Detailed sleep metrics, Personalized sleep rating, Sleep factor tagging, Morning notifications, Memory test, Daily sleep summaries

**Features:** Family Sharing, Apple Watch app

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly subscription | $2.99 | per month |
| Yearly subscription | $29.99 | per year |
| Lifetime Access | $59.99 | one-time |

**What reviewers like**

- 👍 Great interface
- 👍 Helpful for understanding sleep
- 👍 Good for blind users

**What reviewers complain about**

- 🐛 App not working/tracking properly
- 🐛 Sleep time/data inaccurate
- 🔒 Subscription/payment issues
- 🔋 Drains battery

**Reported bugs**

- Sleep stage section disappeared
- App keeps kicking user out
- Widget doesn't update with current data

**Requested features**

- Add ability to log naps
- Improve widget updates
- Provide more explanation of sleep metrics
- Implement REM sleep tracking


## Frequently asked questions

### Is Cycle Tracking free?

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

### Is Sleep Details free?

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

### Which has better reviews, Cycle Tracking or Sleep Details?

Sleep Details is rated higher. Cycle Tracking averages 2.9 out of 5 from 28 ratings, while Sleep Details averages 4.4 from 1.1K ratings.

### Do Cycle Tracking or Sleep Details have ads?

Neither Cycle Tracking nor Sleep Details shows ads.

### Which is updated more often, Cycle Tracking or Sleep Details?

Cycle Tracking ships an update every 11 months, and Sleep Details every 2 months. Most recently, Cycle Tracking was updated on October 24, 2026 and Sleep Details on October 24, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*