# 加密相册 vs PDF Converter

加密相册 and PDF Converter are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. 加密相册 sells 4 in-app purchases, starting at $1.99 per 7 days and PDF Converter sells 2 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

加密相册 ships an update fortnightly, PDF Converter weekly. The most recent releases landed on October 25, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | 加密相册 | PDF Converter |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Weekly** |
| Size | 33 MB | 9 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) | [添 邱](https://appshunter.io/developer/1819535113) |

## 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 Converter

[App page](https://appshunter.io/ios/app/pdf-converter-file-conversion/id6751520980)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PDF Converter Weekly | $4.99 | per 7 days |
| PDF Converter Annual | $29.99 | 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 Converter free?

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

### Do 加密相册 or PDF Converter have ads?

Neither 加密相册 nor PDF Converter shows ads.

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

加密相册 ships an update fortnightly, and PDF Converter weekly. Most recently, 加密相册 was updated on October 25, 2026 and PDF Converter on October 28, 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.*