# PDF转换器 vs AuthenticatorPlus

The clearest difference is in-app purchases: AuthenticatorPlus at none against PDF转换器's 2. PDF转换器's advantage is update cadence (every 3 days vs every 10 days). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. PDF转换器 sells 2 in-app purchases, starting at $2.99 per 7 days. AuthenticatorPlus asks for nothing beyond the download.

PDF转换器 ships an update every 3 days, AuthenticatorPlus every 10 days. The most recent releases landed on September 16, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | PDF转换器 | AuthenticatorPlus |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 10 days |
| Size | 8 MB | 3 MB |
| Requires iOS | **15.6** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Ming Fai Lee](https://appshunter.io/developer/1691484255) | [忠法 周](https://appshunter.io/developer/1670518732) |

## What reviewers say

### 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 |


### AuthenticatorPlus

[App page](https://appshunter.io/ios/app/authenticatorplus/id6797562959)

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

**In-app purchases:** none


## Frequently asked questions

### Is PDF转换器 free?

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

### Is AuthenticatorPlus free?

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

### Do PDF转换器 or AuthenticatorPlus have ads?

Neither PDF转换器 nor AuthenticatorPlus shows ads.

### Which is updated more often, PDF转换器 or AuthenticatorPlus?

PDF转换器 ships an update every 3 days, and AuthenticatorPlus every 10 days. Most recently, PDF转换器 was updated on September 16, 2026 and AuthenticatorPlus on September 20, 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.*