# FA 4xx App vs wallPen

The clearest difference is update cadence: wallPen at every 2 months against FA 4xx App's every 34 months. FA 4xx App's advantage is iOS requirement (9.0 vs 13.0). On price, ads, 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.

FA 4xx App ships an update every 34 months, wallPen every 2 months. The most recent releases landed on October 14, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | FA 4xx App | wallPen |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 34 months | **Every 2 months** |
| Size | 93 MB | 90 MB |
| Requires iOS | **9.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Woehler Technik GmbH](https://appshunter.io/developer/959456679) | [wallPen GmbH](https://appshunter.io/developer/1713500624) |

## What reviewers say

### FA 4xx App

[App page](https://appshunter.io/ios/app/fa-4xx-app/id1466210879)

**Features:** macOS Compatibility

**In-app purchases:** none


### wallPen

[App page](https://appshunter.io/ios/app/wallpen/id6470351272)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is FA 4xx App free?

FA 4xx App is free to download, with no in-app purchases.

### Is wallPen free?

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

### Do FA 4xx App or wallPen have ads?

Neither FA 4xx App nor wallPen shows ads.

### Which is updated more often, FA 4xx App or wallPen?

FA 4xx App ships an update every 34 months, and wallPen every 2 months. Most recently, FA 4xx App was updated on October 14, 2026 and wallPen on September 24, 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.*