# 阅读世界 vs PERC

The clearest difference is update cadence: PERC at every 3 weeks against 阅读世界's every 2 months. PERC also leads on iOS requirement (10.0 vs 13.0). On price, ads, in-app purchases and device support there is nothing between them.

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

阅读世界 ships an update every 2 months, PERC every 3 weeks. The most recent releases landed on October 4, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | 阅读世界 | PERC |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Size | 496 MB | 50 MB |
| Requires iOS | 13.0 | **10.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [玉 马](https://appshunter.io/developer/1464871044) | [深圳市好学多科技有限公司](https://appshunter.io/developer/1568037324) |

## What reviewers say

### 阅读世界

[App page](https://appshunter.io/ios/app/id1319171352)

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

**In-app purchases:** none


### PERC

[App page](https://appshunter.io/ios/app/perc/id1575353864)

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

**In-app purchases:** none


## Frequently asked questions

### Is 阅读世界 free?

阅读世界 is free to download, with no in-app purchases.

### Is PERC free?

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

### Do 阅读世界 or PERC have ads?

Neither 阅读世界 nor PERC shows ads.

### Which is updated more often, 阅读世界 or PERC?

阅读世界 ships an update every 2 months, and PERC every 3 weeks. Most recently, 阅读世界 was updated on October 4, 2026 and PERC on October 27, 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.*