This app will ask you the official questions of the German ham radio (amateur ra
About this app
This app will ask you the official questions of the German ham radio exam. The questions are shuffled and preferably wrong answered questions will be asked.
Licensed under Apache-2.0.
What's New in v1.4.0.3
Imported from the F-Droid repository index.
Version history
Jul 24, 2025 · 29.2 MB · Android API 21–36 · code 53
Imported from the F-Droid repository index.
SHA-256 1c581a97be0d1a52043ec8ce7403b244b672852b02ceb452309905b279a3a792
May 20, 2024 · 29 MB · Android API 19–34 · code 51
Imported from the F-Droid repository index.
SHA-256 3f1420fc99897929ade1f0aa06ba4d4bda61f14a60be2e479ccd30251cf9bfc4
Nov 26, 2023 · 29.6 MB · Android API 14–34 · code 49
Imported from the F-Droid repository index.
SHA-256 56eb4522fa766b9e8c7015484cd01c24f9d435e2aa1a505319b85342be895df6
Will it run on your device?
92%
- Runs on a broad range of modern Android versions.
- Multiple CPU architectures are covered.
- Aligned with the latest Android target SDK expectations.
Installation Guide
Open Settings on your Android device
Go to Security → Unknown sources (or Install unknown apps)
Enable "Allow from this source" for your browser or file manager
Open the downloaded APK file from your Downloads folder
Tap "Install" and wait for installation to complete
Launch the app from your home screen
Make sure to re-enable Unknown Sources restrictions after installation for security.
How to install this safely
How to verify the file you downloaded
Before you install anything, confirm the file is the one described here. On a computer, run shasum -a 256 your-download.apk (macOS or Linux) or certutil -hashfile your-download.apk SHA256 (Windows), then compare the output character-for-character with the SHA-256 on this page. If a single character differs, the file is not the build we recorded — delete it.
What the signing certificate proves
Every Android app is signed with a private key that only its developer holds. The fingerprint on this page is a hash of the matching public certificate, and it proves continuity rather than identity: it tells you a build came from whoever signed the earlier ones. Android enforces this at install time — if a package claiming to be de.hosenhasser.funktrainer is signed with a different key, the system will refuse to install it over your existing copy. A fingerprint that changes between releases is worth pausing on, because a repackaged app that has been modified by someone else cannot keep the original signature.
How to roll back to an earlier version
If the current release misbehaves, 1.4.0.1 is the last build before it. Android will not install an older version code over a newer one, so you must uninstall Funktrainer first — which clears its local data unless you have a backup. Reinstall the older APK only if its signing fingerprint matches the build you already trust, and check the API range: an older release may target an Android version your device has moved past.
Why we list sources instead of hosting everything
The official store channel is almost always the right choice: it updates automatically and carries the publisher's own distribution guarantees. A direct APK is useful when a device has no store access, when a rollout has not reached your region, or when you need a specific version — and only when the publisher has authorized that copy. APKBrowse does not list pirated, cracked, or unauthorized rebuilds of Funktrainer, and a listing is removed when the evidence for it stops holding up.
Get Funktrainer
Every source we list for de.hosenhasser.funktrainer is legality-reviewed. Pirated or cracked builds are never offered.
Other sources
F-Droid listing
officialF-Droid builds this app from source and signs it. This is its official listing, with older builds and full release notes.
Source code
verified publisherThe upstream repository this build is compiled from.
We check legality and signature continuity, but device behaviour still varies. Install at your own discretion.
App Information
Security Verification
We record provenance; we do not run malware scans. Verify the hash yourself before installing.
SHA-256 Hash
1c581a97be0d1a52043ec8ce7403b244b672852b02ceb452309905b279a3a792
Signing certificate
b0b65a2a5562762703fd344bd88267123552760fd113f47cd7a0dbddbbf5f5b2
Permissions Required
Previous Versions
The signing certificate fingerprint for this release is on record, so a build that does not match it did not come from this publisher.
Report a problem with this listing
A listing is only as good as its corrections. If a source is broken, a signature looks wrong, or this app should not be here, tell the moderation team.