# Offline PDF Merge vs RubiMask

The clearest difference is in-app purchases: Offline PDF Merge at none against RubiMask's 3. RubiMask's advantage is iOS requirement (17.0 vs 26.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. RubiMask sells 3 in-app purchases, starting at $2.99 per month. Offline PDF Merge asks for nothing beyond the download.

Offline PDF Merge ships an update monthly, RubiMask every 4 weeks. The most recent releases landed on October 7, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Offline PDF Merge | RubiMask |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Monthly | **Every 4 weeks** |
| Size | 11 MB | 26 MB |
| Requires iOS | 26.0 | **17.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | +4 | 4+ |
| Developer | [Scriptstash Limited](https://appshunter.io/developer/1844753507) | [KeiK LLC](https://appshunter.io/developer/1854674572) |

## What reviewers say

### Offline PDF Merge

[App page](https://appshunter.io/ios/app/offline-pdf-merge/id6756957998)

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

**In-app purchases:** none


### RubiMask

[App page](https://appshunter.io/ios/app/rubimask-ocr-pdf-scanner/id6756987331)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| RubiMask Premium | $2.99 | per month |
| RubiMask Premium | $11.99 | per year |
| RubiMask Premium | $19.99 | one-time |


## Frequently asked questions

### Is Offline PDF Merge free?

Offline PDF Merge is free to download, with no in-app purchases.

### Is RubiMask free?

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

### Do Offline PDF Merge or RubiMask have ads?

Both Offline PDF Merge and RubiMask show ads.

### Which is updated more often, Offline PDF Merge or RubiMask?

Offline PDF Merge ships an update monthly, and RubiMask every 4 weeks. Most recently, Offline PDF Merge was updated on October 7, 2026 and RubiMask on October 14, 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.*