# PDF Guardㅤ vs PDF Locker

The clearest difference is in-app purchases: PDF Guardㅤ at none against PDF Locker's 3. PDF Guardㅤ also leads on iOS requirement (13.0 vs 17.0). PDF Locker's advantage is update cadence (every 5 months vs every 20 months). On price, ads and device support there is nothing between them.

Both are free to download. PDF Locker sells 3 in-app purchases, starting at $4.99 per 7 days. PDF Guardㅤ asks for nothing beyond the download.

PDF Guardㅤ ships an update every 20 months, PDF Locker every 5 months. The most recent releases landed on October 12, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | PDF Guardㅤ | PDF Locker |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 20 months | **Every 5 months** |
| Size | 27 MB | 3 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Hrishi Suthar](https://appshunter.io/developer/1660005858) | [Vikram Singh](https://appshunter.io/developer/1800895019) |

## What reviewers say

### PDF Guardㅤ

[App page](https://appshunter.io/ios/app/pdf-guard/id6475248978)

**Features:** macOS Compatibility

**In-app purchases:** none


### PDF Locker

[App page](https://appshunter.io/ios/app/pdf-locker-pdf-wolf/id6745149950)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Mobile Pro Access Weekly | $4.99 | per 7 days |
| Mobile Pro Access Yearly | $19.99 | per year |
| Pro Lifetime Unlock | $19.99 | one-time |


## Frequently asked questions

### Is PDF Guardㅤ free?

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

### Is PDF Locker free?

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

### Do PDF Guardㅤ or PDF Locker have ads?

Neither PDF Guardㅤ nor PDF Locker shows ads.

### Which is updated more often, PDF Guardㅤ or PDF Locker?

PDF Guardㅤ ships an update every 20 months, and PDF Locker every 5 months. Most recently, PDF Guardㅤ was updated on October 12, 2026 and PDF Locker on October 10, 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.*