# 软航PDF阅读器 vs 格式转换助手

The clearest difference is in-app purchases: 软航PDF阅读器 at none against 格式转换助手's 3. 软航PDF阅读器 also leads on update cadence (every 2 days vs every 5 months) and iOS requirement (12.0 vs 15.0). On price, ads and device support there is nothing between them.

Both are free to download. 格式转换助手 sells 3 one-off in-app purchases. 软航PDF阅读器 asks for nothing beyond the download.

软航PDF阅读器 ships an update every 2 days, 格式转换助手 every 5 months. The most recent releases landed on October 7, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | 软航PDF阅读器 | 格式转换助手 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 5 months |
| Size | 10 MB | 32 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Chongqing Ruanhang Technology Co., Ltd.](https://appshunter.io/developer/1538523893) | [QQY.LTD](https://appshunter.io/developer/1743706249) |

## What reviewers say

### 软航PDF阅读器

[App page](https://appshunter.io/ios/app/pdf/id1540740963)

**Features:** macOS Compatibility

**In-app purchases:** none


### 格式转换助手

[App page](https://appshunter.io/ios/app/id6670539731)

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 月卡 | $0.99 | one-time |
| 季卡 | $2.99 | one-time |
| 年卡 | $9.99 | one-time |


## Frequently asked questions

### Is 软航PDF阅读器 free?

软航PDF阅读器 is free to download, with no in-app purchases.

### Is 格式转换助手 free?

格式转换助手 is free to download, with in-app purchases available.

### Do 软航PDF阅读器 or 格式转换助手 have ads?

Neither 软航PDF阅读器 nor 格式转换助手 shows ads.

### Which is updated more often, 软航PDF阅读器 or 格式转换助手?

软航PDF阅读器 ships an update every 2 days, and 格式转换助手 every 5 months. Most recently, 软航PDF阅读器 was updated on October 7, 2026 and 格式转换助手 on October 1, 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.*