# SonitorMOBILE vs PDF Guardㅤ

The clearest difference is update cadence: SonitorMOBILE at every 5 weeks against PDF Guardㅤ's every 20 months. PDF Guardㅤ's advantage is iOS requirement (13.0 vs 17). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

SonitorMOBILE ships an update every 5 weeks, PDF Guardㅤ every 20 months. The most recent releases landed on October 9, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | SonitorMOBILE | PDF Guardㅤ |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 20 months |
| Size | 33 MB | 27 MB |
| Requires iOS | 17 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Sonitor Technologies AS](https://appshunter.io/developer/1696572373) | [Hrishi Suthar](https://appshunter.io/developer/1660005858) |

## What reviewers say

### SonitorMOBILE

[App page](https://appshunter.io/ios/app/sonitormobile/id6451105956)

**Features:** Vision Pro support

**In-app purchases:** none


### PDF Guardㅤ

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

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SonitorMOBILE free?

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

### Is PDF Guardㅤ free?

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

### Do SonitorMOBILE or PDF Guardㅤ have ads?

Neither SonitorMOBILE nor PDF Guardㅤ shows ads.

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

SonitorMOBILE ships an update every 5 weeks, and PDF Guardㅤ every 20 months. Most recently, SonitorMOBILE was updated on October 9, 2026 and PDF Guardㅤ on October 12, 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.*