Mobile app · Education & science

Funktrainer

This app will ask you the official questions of the German ham radio (amateur ra.

Completely free
Android
Open source

Overview

Funktrainer is an amateur and software-defined radio mobile app, available on Android.

Overview written by LicitPro from the documentation published by the authors and the cited sources; we have not tried the resource ourselves.

Excerpts that establish this information

“This app will ask you the official questions of the German ham radio (amateur ra” — F-Droid, 10 November 2026

At a glance

Funktrainer is completely free: it is open source software, and every feature is available without paying or subscribing.

Its licence (Apache-2.0) is a permissive open source licence: use, modification and redistribution are allowed, including in commercial projects.

Strengths

Open source code
No advertising
Commercial use allowed

Sources and checks

Facts collected from F-Droid (credit card, source code, licence, free status, platforms, ads, commercial use, version) — 6 November 2026
Last technical check: 6 November 2026
Description from F-Droid — F-Droid (citation courte)

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