# iClock vs iSleeper

The clearest difference is rating: iClock at 5.0 against iSleeper's 3.3. iClock also leads on in-app purchases (none vs 3) and update cadence (every 6 days vs every 3 weeks). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. iSleeper sells 3 in-app purchases, starting at $1.99 per month. iClock asks for nothing beyond the download.

iClock holds the better App Store score, 5.0 against 3.3. Both are backed by a comparable volume of ratings — 4 and 7 respectively. Written reviews point the same way: 100% of iClock's written reviews are positive against 89% of iSleeper's.

iClock ships an update every 6 days, iSleeper every 3 weeks. The most recent releases landed on June 4, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | iClock | iSleeper |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/iclock-flip-clock/id1512406024/reviews)** | [3.3 (7 ratings)](https://appshunter.io/ios/app/isleeper-sleep-tracker/id1622341132/reviews) |
| Number of ratings | 4 | **7** |
| Positive reviews | **100.0% of reviews** | 89.2% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 6 days** | Every 3 weeks |
| Monetization | **Free** | Freemium |
| Size | 143 MB | 72 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 12+ |
| Developer | [Guoqiang Pang](https://appshunter.io/developer/1002889249) | [镇坚 陈](https://appshunter.io/developer/1086447259) |

## What reviewers say

### iClock

[App page](https://appshunter.io/ios/app/iclock-flip-clock/id1512406024)

This application provides a visually appealing and functional desktop clock with a unique flip animation. It offers customizable display settings, alarm clock functionality, and motivational quotes to help users stay focused and present.

**Highlights:** Flip animation display, Customizable themes and colors, Alarm clock with music options, Motivational quotes, White noise generator, Flashlight function

**Features:** macOS Compatibility

**In-app purchases:** none


### iSleeper

[App page](https://appshunter.io/ios/app/isleeper-sleep-tracker/id1622341132)

This app monitors sleep cycles and records sleep sounds using neural network algorithms. It features a smart alarm clock with light sleep wake-up and voice control, and provides comprehensive sleep statistics. Recordings are stored locally for privacy.

**Highlights:** Sleep cycle analysis, Snore and sleep talk recording, Smart alarm with light sleep wake-up, Voice control for snooze, Comprehensive sleep statistics, Automatic sleep tracking with Apple Watch

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $1.99 | per month |
| Yearly | $9.99 | per year |
| Lifetime Pro | $24.99 | one-time |


## Frequently asked questions

### Is iClock free?

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

### Is iSleeper free?

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

### Which has better reviews, iClock or iSleeper?

iClock is rated higher. iClock averages 5.0 out of 5 from 4 ratings, while iSleeper averages 3.3 from 7 ratings.

### Do iClock or iSleeper have ads?

Neither iClock nor iSleeper shows ads.

### Which is updated more often, iClock or iSleeper?

iClock ships an update every 6 days, and iSleeper every 3 weeks. Most recently, iClock was updated on June 4, 2026 and iSleeper on September 22, 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.*