# 闪电PDF转换 vs 秒译

The clearest difference is in-app purchases: 秒译 at none against 闪电PDF转换's 4. 闪电PDF转换's advantage is iOS requirement (11.0 vs 13.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. 闪电PDF转换 sells 4 in-app purchases, starting at $3.99 per month. 秒译 asks for nothing beyond the download.

闪电PDF转换 ships an update every 6 weeks, 秒译 every 3 weeks. The most recent releases landed on September 13, 2026 and August 16, 2026 respectively.

## The numbers

| Metric | 闪电PDF转换 | 秒译 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 3 weeks** |
| Size | 94 MB | 16 MB |
| Requires iOS | **11.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [丽琼 邓](https://appshunter.io/developer/1702793856) | [杭州闵鼎信息技术有限公司](https://appshunter.io/developer/1845846880) |

## What reviewers say

### 闪电PDF转换

[App page](https://appshunter.io/ios/app/pdf-pdfpdf/id1618181802)

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 一个月会员套餐 | $3.99 | per month |
| 六个月会员 | $8.99 | per 6 months |
| 一年会员 | $10.99 | per year |
| 永久会员 | $27.99 | one-time |


### 秒译

[App page](https://appshunter.io/ios/app/ai/id6775763159)

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

**In-app purchases:** none


## Frequently asked questions

### Is 闪电PDF转换 free?

闪电PDF转换 is free to download, with in-app purchases available.

### Is 秒译 free?

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

### Do 闪电PDF转换 or 秒译 have ads?

Neither 闪电PDF转换 nor 秒译 shows ads.

### Which is updated more often, 闪电PDF转换 or 秒译?

闪电PDF转换 ships an update every 6 weeks, and 秒译 every 3 weeks. Most recently, 闪电PDF转换 was updated on September 13, 2026 and 秒译 on August 16, 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.*