# Learn XML vs C Programming Pro

The clearest difference is price: Learn XML at Free against C Programming Pro's $4.99. Learn XML also leads on iOS requirement (12.0 vs 17.0). On update cadence, ads, in-app purchases and device support there is nothing between them.

Learn XML is free to download; C Programming Pro costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Learn XML ships an update every 4 months, C Programming Pro every 2 months. The most recent releases landed on October 1, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Learn XML | C Programming Pro |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 months** |
| Size | 28 MB | 11 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [OnePercent](https://appshunter.io/developer/1536020418) | [ALG Software Lab SIA](https://appshunter.io/developer/1650561236) |

## What reviewers say

### Learn XML

[App page](https://appshunter.io/ios/app/learn-xml-onepercent/id1561356815)

**Features:** macOS Compatibility

**In-app purchases:** none


### C Programming Pro

[App page](https://appshunter.io/ios/app/c-programming-pro/id6736650731)

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

**In-app purchases:** none


## Frequently asked questions

### Is Learn XML free?

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

### Is C Programming Pro free?

C Programming Pro costs $4.99, with no in-app purchases.

### Do Learn XML or C Programming Pro have ads?

Neither Learn XML nor C Programming Pro shows ads.

### Which is updated more often, Learn XML or C Programming Pro?

Learn XML ships an update every 4 months, and C Programming Pro every 2 months. Most recently, Learn XML was updated on October 1, 2026 and C Programming Pro on October 12, 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.*