# 50Ohm vs Denkfehler

The clearest difference is in-app purchases: 50Ohm at none against Denkfehler's 1. 50Ohm also leads on iOS requirement (15.0 vs 26.5). Denkfehler's advantage is update cadence (every 4 days vs every 3 months). On price, ads and device support there is nothing between them.

Both are free to download. Denkfehler sells 1 one-off in-app purchase. 50Ohm asks for nothing beyond the download.

50Ohm ships an update every 3 months, Denkfehler every 4 days. The most recent releases landed on October 30, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | 50Ohm | Denkfehler |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 81.8% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 4 days** |
| Monetization | Free | — |
| Size | 40 MB | 3 MB |
| Requires iOS | **15.0** | 26.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Deutscher Amateur-Radio-Club e. V.](https://appshunter.io/developer/652824517) | [Matthias Bilger](https://appshunter.io/developer/1890467802) |

## What reviewers say

### 50Ohm

[App page](https://appshunter.io/ios/app/50ohm/id6474642114)

Prepare for your amateur radio license exam with comprehensive learning materials. This app offers short lessons and quick feedback to complement online courses and make studying on the go easy. Contribute your ideas to help improve the volunteer-developed application.

**Highlights:** Amateur radio exam preparation, Short, mobile-friendly lessons, Quick feedback on progress, Complements online courses, Volunteer-developed

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

**In-app purchases:** none


### Denkfehler

[App page](https://appshunter.io/ios/app/denkfehler/id6806746933)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Vollversion | $1.99 | one-time |


## Frequently asked questions

### Is 50Ohm free?

50Ohm is free to download, with no in-app purchases.

### Is Denkfehler free?

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

### Do 50Ohm or Denkfehler have ads?

Neither 50Ohm nor Denkfehler shows ads.

### Which is updated more often, 50Ohm or Denkfehler?

50Ohm ships an update every 3 months, and Denkfehler every 4 days. Most recently, 50Ohm was updated on October 30, 2026 and Denkfehler on October 5, 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.*