# e睡眠 vs Void

The clearest difference is in-app purchases: e睡眠 at none against Void's 1. e睡眠 also leads on iOS requirement (13.0 vs 15.0). Void's advantage is update cadence (every 2 days vs every 3 months). On price, ads and device support there is nothing between them.

Both are free to download. Void sells 1 one-off in-app purchase. e睡眠 asks for nothing beyond the download.

e睡眠 ships an update every 3 months, Void every 2 days. The most recent releases landed on November 3, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | e睡眠 | Void |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 days** |
| Size | 147 MB | 5 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Shanghai Huicheng Science and Education Equipment Co., Ltd](https://appshunter.io/developer/1277587920) | [烜兆 林](https://appshunter.io/developer/1808312464) |

## 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


### Void

[App page](https://appshunter.io/ios/app/void-relax-and-sleep/id6744612138)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Forever Unlock | $0.99 | one-time |


## Frequently asked questions

### Is e睡眠 free?

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

### Is Void free?

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

### Do e睡眠 or Void have ads?

Neither e睡眠 nor Void shows ads.

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

e睡眠 ships an update every 3 months, and Void every 2 days. Most recently, e睡眠 was updated on November 3, 2026 and Void on November 8, 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.*