# CPI Mobile App Suite vs FileOpen PDF Viewer

The clearest difference is review sentiment: CPI Mobile App Suite at 100% against FileOpen PDF Viewer's 13%. CPI Mobile App Suite also leads on rating (5.0 vs 1.0) and update cadence (every 4 months vs every 10 months). On price, ads, in-app purchases and monetization model there is nothing between them.

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

CPI Mobile App Suite holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 3 and 1 respectively. Written reviews point the same way: 100% of CPI Mobile App Suite's written reviews are positive against 13% of FileOpen PDF Viewer's.

CPI Mobile App Suite ships an update every 4 months, FileOpen PDF Viewer every 10 months. The most recent releases landed on September 8, 2026 and June 4, 2026 respectively.

## The numbers

| Metric | CPI Mobile App Suite | FileOpen PDF Viewer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/cpi-mobile-app-suite/id803138727/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/fileopen-pdf-viewer/id1645208749/reviews) |
| Number of ratings | **3** | 1 |
| Positive reviews | **100.0% of reviews** | 12.5% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 10 months |
| Monetization | Free | Free |
| Size | 46 MB | 120 MB |
| Requires iOS | 12.0 | **11** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Chatsworth Products Inc.](https://appshunter.io/developer/803138730) | [FileOpen Systems Inc.](https://appshunter.io/developer/520287058) |

## What reviewers say

### CPI Mobile App Suite

[App page](https://appshunter.io/ios/app/cpi-mobile-app-suite/id803138727)

This suite of tools assists IT and telecommunications professionals with on-the-go design tasks. It helps determine cable fill, select server cabinets and power distribution units, and create bills of material for cable pathways.

**Highlights:** Cable Fill Calculator, Server Cabinet Selector, Power Distribution Unit (PDU) Selector, Cable Pathway Bill of Material (BOM) Creator, Wall-Mount Cabinet Selector, Email results and BOMs

**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 CPI Mobile App Suite free?

CPI Mobile App Suite 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, CPI Mobile App Suite or FileOpen PDF Viewer?

CPI Mobile App Suite is rated higher. CPI Mobile App Suite averages 5.0 out of 5 from 3 ratings, while FileOpen PDF Viewer averages 1.0 from 1 ratings.

### Do CPI Mobile App Suite or FileOpen PDF Viewer have ads?

Neither CPI Mobile App Suite nor FileOpen PDF Viewer shows ads.

### Which is updated more often, CPI Mobile App Suite or FileOpen PDF Viewer?

CPI Mobile App Suite ships an update every 4 months, and FileOpen PDF Viewer every 10 months. Most recently, CPI Mobile App Suite was updated on September 8, 2026 and FileOpen PDF Viewer on June 4, 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.*