# Infrastructure Academy vs FileOpen PDF Viewer

The clearest difference is rating: Infrastructure Academy at 2.0 against FileOpen PDF Viewer's 1.0. FileOpen PDF Viewer's advantage is update cadence (every 10 months vs every 25 months) and review sentiment (13% vs 0%). On price, ratings volume, ads and in-app purchases there is nothing between them.

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

Infrastructure Academy holds the better App Store score, 2.0 against 1.0. Both are backed by a comparable volume of ratings — 4 and 4 respectively. Written reviews complicate that: 0% of Infrastructure Academy's written reviews are positive against 13% of FileOpen PDF Viewer's, so the app with the better star average is not the one people write more warmly about.

Infrastructure Academy ships an update every 25 months, FileOpen PDF Viewer every 10 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Infrastructure Academy | FileOpen PDF Viewer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.0 (4 ratings)](https://appshunter.io/ios/app/infrastructure-academy/id1342198184/reviews)** | [1.0 (4 ratings)](https://appshunter.io/ios/app/fileopen-pdf-viewer/id1645208749/reviews) |
| Number of ratings | 4 | 4 |
| Positive reviews | 0.0% of reviews | **12.5% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 25 months | **Every 10 months** |
| Monetization | Free | Free |
| Size | 26 MB | 120 MB |
| Requires iOS | 11.0 | 11 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Cabling Science](https://appshunter.io/developer/1342198183) | [FileOpen Systems Inc.](https://appshunter.io/developer/520287058) |

## What reviewers say

### Infrastructure Academy

[App page](https://appshunter.io/ios/app/infrastructure-academy/id1342198184)

Access training courses, certificates, and badges from your mobile device. Stream or download instructional videos and product demonstrations, and connect with colleagues on the discussion board. Receive notifications and news on the go to stay updated.

**Highlights:** Access courses, certificates, and badges, Stream or download instructional videos, Offline access to downloaded material, Discussion board for connecting with peers, Receive notifications and news, Showcase certifications on the go

**In-app purchases:** none


### FileOpen PDF Viewer

[App page](https://appshunter.io/ios/app/fileopen-pdf-viewer/id1645208749)

This application allows users to view PDFs that have been encrypted using FileOpen technology on their Apple devices. It provides a straightforward way to access secure documents on iPhones and iPads.

**Highlights:** View FileOpen encrypted PDFs, Supports Apple devices, Simple document access, Secure PDF viewing

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Infrastructure Academy free?

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

### Is FileOpen PDF Viewer free?

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

### Which has better reviews, Infrastructure Academy or FileOpen PDF Viewer?

Infrastructure Academy is rated higher. Infrastructure Academy averages 2.0 out of 5 from 4 ratings, while FileOpen PDF Viewer averages 1.0 from 4 ratings.

### Do Infrastructure Academy or FileOpen PDF Viewer have ads?

Neither Infrastructure Academy nor FileOpen PDF Viewer shows ads.

### Which is updated more often, Infrastructure Academy or FileOpen PDF Viewer?

Infrastructure Academy ships an update every 25 months, and FileOpen PDF Viewer every 10 months. Most recently, Infrastructure Academy was updated on November 2, 2026 and FileOpen PDF Viewer on November 3, 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.*