# HF Bau App vs ProBau Rechner

The clearest difference is in-app purchases: HF Bau App at none against ProBau Rechner's 2. HF Bau App also leads on device support (3 vs 1) and iOS requirement (14.0 vs 16.6). On price and ads there is nothing between them.

Both are free to download. ProBau Rechner sells 2 in-app purchases, starting at $17.99 per year. HF Bau App asks for nothing beyond the download.

## The numbers

| Metric | HF Bau App | ProBau Rechner |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | — |
| Size | 18 MB | 1 MB |
| Requires iOS | **14.0** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Husemann & Fritz EDV Organisations- und Beratungs GmbH](https://appshunter.io/developer/1349246567) | [Nocta Dev LLC](https://appshunter.io/developer/1882676946) |

## What reviewers say

### HF Bau App

[App page](https://appshunter.io/ios/app/hf-bau-app/id1349246568)

**Features:** macOS Compatibility

**In-app purchases:** none


### ProBau Rechner

[App page](https://appshunter.io/ios/app/probau-rechner/id6760566473)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ProBau Rechner Pro | $17.99 | per year |
| ProBau Rechner Pro | $44.99 | one-time |


## Frequently asked questions

### Is HF Bau App free?

HF Bau App is free to download, with no in-app purchases.

### Is ProBau Rechner free?

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

### Do HF Bau App or ProBau Rechner have ads?

Neither HF Bau App nor ProBau Rechner shows ads.

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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.*