# PDF Converter vs 私密相册

PDF Converter and 私密相册 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. PDF Converter sells 2 in-app purchases, starting at $4.99 per 7 days and 私密相册 sells 2 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

PDF Converter ships an update weekly, 私密相册 every 9 days. The most recent releases landed on September 24, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | PDF Converter | 私密相册 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 9 days |
| Size | 9 MB | 17 MB |
| Requires iOS | 15.6 | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [添 邱](https://appshunter.io/developer/1819535113) | [燕纯 姚](https://appshunter.io/developer/1837441679) |

## What reviewers say

### 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 |


### 私密相册

[App page](https://appshunter.io/ios/app/and/id6758133322)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 私密相册限时优惠 | $4.99 | per 7 days |
| 私密相册特价优惠 | $19.99 | one-time |


## Frequently asked questions

### Is PDF Converter free?

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

### Is 私密相册 free?

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

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

Neither PDF Converter nor 私密相册 shows ads.

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

PDF Converter ships an update weekly, and 私密相册 every 9 days. Most recently, PDF Converter was updated on September 24, 2026 and 私密相册 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.*