# CMS SCAN vs OKEN PDF Scanner

The clearest difference is in-app purchases: CMS SCAN at none against OKEN PDF Scanner's 3. CMS SCAN also leads on ads (none vs shown) and iOS requirement (12.0 vs 15.0). OKEN PDF Scanner's advantage is update cadence (every 2 weeks vs every 8 months). On price and device support there is nothing between them.

Both are free to download. OKEN PDF Scanner sells 3 in-app purchases, starting at $2.99 per 7 days. CMS SCAN asks for nothing beyond the download.

CMS SCAN ships an update every 8 months, OKEN PDF Scanner every 2 weeks. The most recent releases landed on October 8, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | CMS SCAN | OKEN PDF Scanner |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/oken-pdf-scanner-pdf-editor/id6744842630/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 8 months | **Every 2 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 33 MB | 41 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Chois Technology](https://appshunter.io/developer/412843396) | [Pratigya Gulani](https://appshunter.io/developer/1804235941) |

## What reviewers say

### CMS SCAN

[App page](https://appshunter.io/ios/app/cms-scan/id6450800818)

**In-app purchases:** none


### OKEN PDF Scanner

[App page](https://appshunter.io/ios/app/oken-pdf-scanner-pdf-editor/id6744842630)

This app offers comprehensive PDF management, allowing you to create, edit, secure, and organize your documents. Features include text and image editing, password protection, merging, splitting, and digital signatures. Optimize file sizes for easy sharing and storage.

**Highlights:** PDF creation from images/documents, Advanced text and image editing, Password protection and unlocking, Merge, split, and rearrange pages, Compress files without quality loss, Add digital signatures

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $2.99 | per 7 days |
| Monthly | $5.99 | per month |
| Yearly | $14.99 | per year |


## Frequently asked questions

### Is CMS SCAN free?

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

### Is OKEN PDF Scanner free?

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

### Do CMS SCAN or OKEN PDF Scanner have ads?

OKEN PDF Scanner shows ads; CMS SCAN does not.

### Which is updated more often, CMS SCAN or OKEN PDF Scanner?

CMS SCAN ships an update every 8 months, and OKEN PDF Scanner every 2 weeks. Most recently, CMS SCAN was updated on October 8, 2026 and OKEN PDF Scanner on October 5, 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.*