# AAT Mechanic App vs Document ScanMaster Pro

The clearest difference is ads: AAT Mechanic App at none against Document ScanMaster Pro's shown. AAT Mechanic App also leads on iOS requirement (12.1 vs 14.0). Document ScanMaster Pro's advantage is update cadence (every 4 months vs every 11 months). On price, in-app purchases and device support there is nothing between them.

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

AAT Mechanic App ships an update every 11 months, Document ScanMaster Pro every 4 months. The most recent releases landed on October 2, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | AAT Mechanic App | Document ScanMaster Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/document-scanmaster-pro/id6471353117/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 11 months | **Every 4 months** |
| Monetization | — | Ad-supported |
| Size | 34 MB | 81 MB |
| Requires iOS | **12.1** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Martin Hupa](https://appshunter.io/developer/444985004) | [Advanced Apps Studio](https://appshunter.io/developer/1172145529) |

## What reviewers say

### AAT Mechanic App

[App page](https://appshunter.io/ios/app/aat-mechanic-app/id1628878781)

**Features:** macOS Compatibility

**In-app purchases:** none


### Document ScanMaster Pro

[App page](https://appshunter.io/ios/app/document-scanmaster-pro/id6471353117)

Transform your smartphone into a powerful scanner to digitize documents, ID cards, and photos. Convert printed text to editable content, merge PDFs, and create custom documents. Easily share files in PNG or PDF formats.

**Highlights:** OCR text recognition, ID card scanning, PDF merging, Document creation and annotation, QR code generation and scanning, PNG and PDF sharing

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is AAT Mechanic App free?

AAT Mechanic App is free to download, with no in-app purchases.

### Is Document ScanMaster Pro free?

Document ScanMaster Pro is free to download, with no in-app purchases.

### Do AAT Mechanic App or Document ScanMaster Pro have ads?

Document ScanMaster Pro shows ads; AAT Mechanic App does not.

### Which is updated more often, AAT Mechanic App or Document ScanMaster Pro?

AAT Mechanic App ships an update every 11 months, and Document ScanMaster Pro every 4 months. Most recently, AAT Mechanic App was updated on October 2, 2026 and Document ScanMaster Pro on October 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.*