# lock pdf | unlock pdf expert vs Torto

lock pdf | unlock pdf expert and Torto are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support 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. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | lock pdf | unlock pdf expert | Torto |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Size | 1 MB | 3 MB |
| Requires iOS | **16.0** | 17.6 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [逢信 谭](https://appshunter.io/developer/1825263250) | [Protikhin Alex](https://appshunter.io/developer/1071705952) |

## What reviewers say

### lock pdf | unlock pdf expert

[App page](https://appshunter.io/ios/app/lock-pdf-unlock-pdf-expert/id6749227930)

**Features:** macOS Compatibility

**In-app purchases:** none


### Torto

[App page](https://appshunter.io/ios/app/torto-document-vault/id6782636880)

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

**In-app purchases:** none


## Frequently asked questions

### Is lock pdf | unlock pdf expert free?

lock pdf | unlock pdf expert is free to download, with no in-app purchases.

### Is Torto free?

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

### Do lock pdf | unlock pdf expert or Torto have ads?

Neither lock pdf | unlock pdf expert nor Torto shows ads.

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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.*