# 百威生研 vs Renight

The clearest difference is in-app purchases: 百威生研 at none against Renight's 3. 百威生研 also leads on iOS requirement (15.1 vs 17.0). Renight's advantage is update cadence (every 3 weeks vs every 9 months). On price, ads and device support there is nothing between them.

Both are free to download. Renight sells 3 in-app purchases, starting at $4.99 per month. 百威生研 asks for nothing beyond the download.

百威生研 ships an update every 9 months, Renight every 3 weeks. The most recent releases landed on October 25, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | 百威生研 | Renight |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 3 weeks** |
| Size | 40 MB | 15 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [MOBILE CARDS ENTERPRISE](https://appshunter.io/developer/1676218596) | [爱华 刘](https://appshunter.io/developer/1797362038) |

## What reviewers say

### 百威生研

[App page](https://appshunter.io/ios/app/id6448719926)

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

**In-app purchases:** none


### Renight

[App page](https://appshunter.io/ios/app/renight-sleep-sounds/id6803184237)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Renight Pro Monthly | $4.99 | per month |
| Renight Pro Yearly | $29.99 | per year |
| Renight Pro Lifetime | $59.99 | one-time |


## Frequently asked questions

### Is 百威生研 free?

百威生研 is free to download, with no in-app purchases.

### Is Renight free?

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

### Do 百威生研 or Renight have ads?

Neither 百威生研 nor Renight shows ads.

### Which is updated more often, 百威生研 or Renight?

百威生研 ships an update every 9 months, and Renight every 3 weeks. Most recently, 百威生研 was updated on October 25, 2026 and Renight on October 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.*