# 加密相册 vs PDF转换器

The clearest difference is update cadence: PDF转换器 at every 3 days against 加密相册's fortnightly. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. 加密相册 sells 4 in-app purchases, starting at $1.99 per 7 days and PDF转换器 sells 2 in-app purchases, starting at $2.99 per 7 days. Whichever you choose, the download price is not the number that matters.

加密相册 ships an update fortnightly, PDF转换器 every 3 days. The most recent releases landed on September 24, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | 加密相册 | PDF转换器 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 3 days** |
| Size | 33 MB | 8 MB |
| Requires iOS | 15.6 | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [绍兴 宫](https://appshunter.io/developer/1784167469) | [Ming Fai Lee](https://appshunter.io/developer/1691484255) |

## What reviewers say

### 加密相册

[App page](https://appshunter.io/ios/app/and/id6748726733)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 限时优惠 | $1.99 | per 7 days |
| 特价优惠 | $4.99 | per month |
| 限时特价 | $24.99 | per year |
| 历史最低 | $29.99 | one-time |


### PDF转换器

[App page](https://appshunter.io/ios/app/pdf-pdf/id6755513544)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PDF转换器周会员 | $2.99 | per 7 days |
| PDF转换器年会员 | $24.99 | per year |


## Frequently asked questions

### Is 加密相册 free?

加密相册 is free to download, with in-app purchases available.

### Is PDF转换器 free?

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

### Do 加密相册 or PDF转换器 have ads?

Neither 加密相册 nor PDF转换器 shows ads.

### Which is updated more often, 加密相册 or PDF转换器?

加密相册 ships an update fortnightly, and PDF转换器 every 3 days. Most recently, 加密相册 was updated on September 24, 2026 and PDF转换器 on October 3, 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.*