# OS/ vs XML to PDF

The clearest difference is in-app purchases: OS/ at none against XML to PDF's 3. OS/ also leads on update cadence (weekly vs every 6 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. XML to PDF sells 3 in-app purchases, starting at $2.99 per 7 days. OS/ asks for nothing beyond the download.

OS/ ships an update weekly, XML to PDF every 6 weeks. The most recent releases landed on September 26, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | OS/ | XML to PDF |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 6 weeks |
| Size | 40 MB | 2 MB |
| Requires iOS | **16.4** | 17.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [314 OS GmbH](https://appshunter.io/developer/1805669218) | [Muhammad Mujahid Khan](https://appshunter.io/developer/1749120554) |

## What reviewers say

### OS/

[App page](https://appshunter.io/ios/app/os/id6744038994)

**Features:** macOS Compatibility

**In-app purchases:** none


### XML to PDF

[App page](https://appshunter.io/ios/app/xml-to-pdf-code-printer/id6759917332)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $2.99 | per 7 days |
| Monthly | $6.99 | per month |
| Yearly | $17.99 | per year |


## Frequently asked questions

### Is OS/ free?

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

### Is XML to PDF free?

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

### Do OS/ or XML to PDF have ads?

Neither OS/ nor XML to PDF shows ads.

### Which is updated more often, OS/ or XML to PDF?

OS/ ships an update weekly, and XML to PDF every 6 weeks. Most recently, OS/ was updated on September 26, 2026 and XML to PDF on September 28, 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.*