# 大E小E vs 雷眼

The clearest difference is in-app purchases: 大E小E at none against 雷眼's 1. On price, update cadence, ads and device support there is nothing between them.

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

大E小E ships an update every 3 months, 雷眼 every 5 months. The most recent releases landed on September 8, 2026 and September 7, 2026 respectively.

## The numbers

| Metric | 大E小E | 雷眼 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 5 months |
| Size | 64 MB | 34 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 12+ | 4+ |
| Developer | [Fast Vision(tianjin)Technology Co.,Ltd](https://appshunter.io/developer/1639275589) | [祥利 管](https://appshunter.io/developer/1553028619) |

## What reviewers say

### 大E小E

[App page](https://appshunter.io/ios/app/ee/id1639275587)

**Features:** macOS Compatibility

**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 大E小E free?

大E小E 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 大E小E or 雷眼 have ads?

Neither 大E小E nor 雷眼 shows ads.

### Which is updated more often, 大E小E or 雷眼?

大E小E ships an update every 3 months, and 雷眼 every 5 months. Most recently, 大E小E was updated on September 8, 2026 and 雷眼 on September 7, 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.*