# RETGas vs PDF Converter

The clearest difference is in-app purchases: RETGas at none against PDF Converter's 2. RETGas also leads on ads (none vs shown) and update cadence (every 4 days vs every 2 weeks). On price, device support and iOS requirement there is nothing between them.

Both are free to download. PDF Converter sells 2 in-app purchases, starting at $5.99 per 7 days. RETGas asks for nothing beyond the download.

RETGas ships an update every 4 days, PDF Converter every 2 weeks. The most recent releases landed on September 1, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | RETGas | PDF Converter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.7 (22 ratings)](https://appshunter.io/ios/app/pdf-converter-ocr-reader/id6758373190/reviews)** |
| Number of ratings | — | **22** |
| Positive reviews | — | 18.2% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 4 days** | Every 2 weeks |
| Monetization | — | Free with in-app purchases |
| Size | 104 MB | 93 MB |
| Requires iOS | 16.0 | **15.6** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Cristian Chacon](https://appshunter.io/developer/1648704763) | [Hitek Limited](https://appshunter.io/developer/6774064976) |

## What reviewers say

### RETGas

[App page](https://appshunter.io/ios/app/retgas/id6443767512)

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

**In-app purchases:** none


### PDF Converter

[App page](https://appshunter.io/ios/app/pdf-converter-ocr-reader/id6758373190)

Effortlessly transform paper documents into digital files with scanning, text recognition, and editing tools. Ideal for students, professionals, and everyday users needing to organize and manage documents.

**Highlights:** Photo scanning to digital files, OCR text recognition and copying, Import and view local PDFs, Page management (delete, rearrange), Highlighting and annotation tools, Intuitive user interface

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PDF Converter Ad-Free | $5.99 | per 7 days |
| PDF Converter Ad-Free | $29.99 | per year |


## Frequently asked questions

### Is RETGas free?

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

### Is PDF Converter free?

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

### Do RETGas or PDF Converter have ads?

PDF Converter shows ads; RETGas does not.

### Which is updated more often, RETGas or PDF Converter?

RETGas ships an update every 4 days, and PDF Converter every 2 weeks. Most recently, RETGas was updated on September 1, 2026 and PDF Converter on September 21, 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.*