# e睡眠 vs CISleep

e睡眠 and CISleep are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

e睡眠 ships an update every 3 months, CISleep every 2 months. The most recent releases landed on August 29, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | e睡眠 | CISleep |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Size | 147 MB | 119 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Shanghai Huicheng Science and Education Equipment Co., Ltd](https://appshunter.io/developer/1277587920) | [Shenzhen Yunzhimian Technology Co., Ltd](https://appshunter.io/developer/1457932494) |

## What reviewers say

### e睡眠

[App page](https://appshunter.io/ios/app/e/id1517334920)

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

**In-app purchases:** none


### CISleep

[App page](https://appshunter.io/ios/app/cisleep/id1569149380)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is e睡眠 free?

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

### Is CISleep free?

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

### Do e睡眠 or CISleep have ads?

Neither e睡眠 nor CISleep shows ads.

### Which is updated more often, e睡眠 or CISleep?

e睡眠 ships an update every 3 months, and CISleep every 2 months. Most recently, e睡眠 was updated on August 29, 2026 and CISleep on September 17, 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.*