# Invincible Scanner vs PDF Converter Pro Master

The clearest difference is ads: PDF Converter Pro Master at none against Invincible Scanner's shown. On price, update cadence, 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.

Invincible Scanner ships an update every 4 months, PDF Converter Pro Master every 2 months. The most recent releases landed on September 11, 2026 and May 17, 2026 respectively.

## The numbers

| Metric | Invincible Scanner | PDF Converter Pro Master |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 4 months | **Every 2 months** |
| Size | 240 MB | 11 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [HONGKONG HUIG TRADING LIMITED](https://appshunter.io/developer/1749253327) | [HK YIHAN TECHNOLOGY CO., LIMITED](https://appshunter.io/developer/1761346342) |

## What reviewers say

### Invincible Scanner

[App page](https://appshunter.io/ios/app/invincible-scanner/id6503436860)

**Features:** macOS Compatibility

**In-app purchases:** none


### PDF Converter Pro Master

[App page](https://appshunter.io/ios/app/pdf-converter-pro-master/id6612030395)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Invincible Scanner free?

Invincible Scanner is free to download, with no in-app purchases.

### Is PDF Converter Pro Master free?

PDF Converter Pro Master is free to download, with no in-app purchases.

### Do Invincible Scanner or PDF Converter Pro Master have ads?

Invincible Scanner shows ads; PDF Converter Pro Master does not.

### Which is updated more often, Invincible Scanner or PDF Converter Pro Master?

Invincible Scanner ships an update every 4 months, and PDF Converter Pro Master every 2 months. Most recently, Invincible Scanner was updated on September 11, 2026 and PDF Converter Pro Master on May 17, 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.*