# EMSYS Inventory vs PDF Pro

The clearest difference is in-app purchases: EMSYS Inventory at none against PDF Pro's 7. EMSYS Inventory also leads on ads (none vs shown) and device support (3 vs 1). PDF Pro's advantage is update cadence (every 9 days vs every 3 weeks). On price and iOS requirement there is nothing between them.

Both are free to download. PDF Pro sells 7 in-app purchases, starting at $5.99 per 7 days. EMSYS Inventory asks for nothing beyond the download.

EMSYS Inventory ships an update every 3 weeks, PDF Pro every 9 days. The most recent releases landed on October 27, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | EMSYS Inventory | PDF Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/pdf-pro-doc-and-mark/id6738903272/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 weeks | **Every 9 days** |
| Monetization | — | Free with in-app purchases |
| Size | 29 MB | 79 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [PRODINF SOFTWARE](https://appshunter.io/developer/1643123678) | [APPSKY HONG KONG LIMITED](https://appshunter.io/developer/1629849302) |

## What reviewers say

### EMSYS Inventory

[App page](https://appshunter.io/ios/app/emsys-inventory/id1660795963)

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

**In-app purchases:** none


### PDF Pro

[App page](https://appshunter.io/ios/app/pdf-pro-doc-and-mark/id6738903272)

This app is a comprehensive document management tool for handling PDFs and other file types. It allows users to scan, annotate, sign, merge images into PDFs, and quickly search and favorite files. Enjoy efficient mobile productivity with a user-friendly interface.

**Highlights:** Multi-format document support (PDF, Word, Excel, PPT), Scan documents to PDF, Annotate PDFs with highlighting and drawing, Digitally sign documents, Merge images into PDF, Quick file search and favorites

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PDF Pro | $5.99 | per 7 days |
| PDF Pro | $6.99 | per 7 days |
| PDF Pro | $6.99 | per 7 days |
| PDF Pro | $19.99 | per month |
| PDF Pro | $49.99 | per year |
| PDF Pro | $59.99 | per year |
| PDF Pro | $59.99 | per year |


## Frequently asked questions

### Is EMSYS Inventory free?

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

### Is PDF Pro free?

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

### Do EMSYS Inventory or PDF Pro have ads?

PDF Pro shows ads; EMSYS Inventory does not.

### Which is updated more often, EMSYS Inventory or PDF Pro?

EMSYS Inventory ships an update every 3 weeks, and PDF Pro every 9 days. Most recently, EMSYS Inventory was updated on October 27, 2026 and PDF Pro on October 24, 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.*