# P7M Viewer vs Drone Dynamics

The clearest difference is in-app purchases: Drone Dynamics at none against P7M Viewer's 1. Drone Dynamics also leads on ads (none vs shown) and update cadence (fortnightly vs every 2 months). P7M Viewer's advantage is iOS requirement (13.0 vs 15.0). On price and device support there is nothing between them.

Both are free to download. P7M Viewer sells 1 one-off in-app purchase. Drone Dynamics asks for nothing beyond the download.

P7M Viewer ships an update every 2 months, Drone Dynamics fortnightly. The most recent releases landed on October 16, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | P7M Viewer | Drone Dynamics |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (338 ratings)](https://appshunter.io/ios/app/p7m-viewer/id1291364898/reviews)** | — |
| Number of ratings | **338** | — |
| Positive reviews | 71.9% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Fortnightly** |
| Monetization | Free with in-app purchases | — |
| Size | 16 MB | 4 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Filippo Maguolo](https://appshunter.io/developer/1154554717) | [Siracusa News srl](https://appshunter.io/developer/536610870) |

## What reviewers say

### P7M Viewer

[App page](https://appshunter.io/ios/app/p7m-viewer/id1291364898)

This application allows you to open and view digitally signed P7M files. You can import files from various cloud services and email clients, inspect the content and signer certificates, and easily export or print the content.

**Highlights:** Open P7M files, View digital signatures, Inspect signer certificates, Import from cloud apps, Export and print content, Open PDF PAdES signatures

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $2.99 | one-time |

**What reviewers like**

- 👍 Useful for P7M files
- 👍 Easy to use
- 👍 Fast and efficient
- 👍 Good for mobile work
- 👍 Solves PEC attachment issues

**What reviewers complain about**

- 👎 In-app purchase required for full functionality
- 👎 Invasive advertising
- 👎 Not free as advertised
- 👎 Issues with opening files
- 👎 Privacy concerns

**Reported bugs**

- Repeatedly asks for cookie consent
- App won't open individual vendor cookie settings
- Doesn't open P7M files
- App crashes mid-read
- Cannot open files after payment

**Requested features**

- Option to delete stored files
- Ability to sign files digitally
- Annual subscription option
- Dark mode


### Drone Dynamics

[App page](https://appshunter.io/ios/app/drone-dynamics/id6793819226)

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

**In-app purchases:** none


## Frequently asked questions

### Is P7M Viewer free?

P7M Viewer is free to download, with in-app purchases available.

### Is Drone Dynamics free?

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

### Do P7M Viewer or Drone Dynamics have ads?

P7M Viewer shows ads; Drone Dynamics does not.

### Which is updated more often, P7M Viewer or Drone Dynamics?

P7M Viewer ships an update every 2 months, and Drone Dynamics fortnightly. Most recently, P7M Viewer was updated on October 16, 2026 and Drone Dynamics on September 26, 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.*