# O vs DOC2PDF

The clearest difference is in-app purchases: O at none against DOC2PDF's 2. O also leads on iOS requirement (11.0 vs 26.0). DOC2PDF's advantage is update cadence (every 5 weeks vs every 3 months). On price, ads and device support there is nothing between them.

Both are free to download. DOC2PDF sells 2 in-app purchases, starting at $0.99 per month. O asks for nothing beyond the download.

O ships an update every 3 months, DOC2PDF every 5 weeks. The most recent releases landed on October 29, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | O | DOC2PDF |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.5 (2 ratings)](https://appshunter.io/ios/app/doc2pdf/id6746772595/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 50.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 5 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 34 MB | 5 MB |
| Requires iOS | **11.0** | 26.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Orange Electronic](https://appshunter.io/developer/506278411) | [CAGAN DURGUN](https://appshunter.io/developer/1795226037) |

## What reviewers say

### O

[App page](https://appshunter.io/ios/app/o-genius-od20-obdii/id1480197385)

**Features:** macOS Compatibility

**In-app purchases:** none


### DOC2PDF

[App page](https://appshunter.io/ios/app/doc2pdf/id6746772595)

Convert Markdown files into professional PDFs with ease. This app offers a modern interface, efficient file management, and seamless integration across Apple devices. It's ideal for students, developers, and professionals needing to share documents quickly.

**Highlights:** Markdown to PDF conversion, Keyboard shortcuts for productivity, Modern, minimal design, Fast and reliable performance, iPad optimized editing, Cross-device compatibility

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $0.99 | per month |
| Yearly | $9.99 | per year |


## Frequently asked questions

### Is O free?

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

### Is DOC2PDF free?

DOC2PDF is free to download, with in-app purchases available.

### Do O or DOC2PDF have ads?

Neither O nor DOC2PDF shows ads.

### Which is updated more often, O or DOC2PDF?

O ships an update every 3 months, and DOC2PDF every 5 weeks. Most recently, O was updated on October 29, 2026 and DOC2PDF on October 15, 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.*