# 读万卷 vs 雷眼

The clearest difference is in-app purchases: 读万卷 at none against 雷眼's 1. 读万卷 also leads on update cadence (every 5 weeks vs every 5 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. 雷眼 sells 1 one-off in-app purchase. 读万卷 asks for nothing beyond the download.

读万卷 ships an update every 5 weeks, 雷眼 every 5 months. The most recent releases landed on September 30, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | 读万卷 | 雷眼 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 5 months |
| Size | 190 MB | 34 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [强 闫](https://appshunter.io/developer/1653509757) | [祥利 管](https://appshunter.io/developer/1553028619) |

## What reviewers say

### 读万卷

[App page](https://appshunter.io/ios/app/id6557038541)

**In-app purchases:** none


### 雷眼

[App page](https://appshunter.io/ios/app/waf/id6753199010)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 正式版 | $3.99 | one-time |


## Frequently asked questions

### Is 读万卷 free?

读万卷 is free to download, with no in-app purchases.

### Is 雷眼 free?

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

### Do 读万卷 or 雷眼 have ads?

Neither 读万卷 nor 雷眼 shows ads.

### Which is updated more often, 读万卷 or 雷眼?

读万卷 ships an update every 5 weeks, and 雷眼 every 5 months. Most recently, 读万卷 was updated on September 30, 2026 and 雷眼 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.*