UBI-Funk

VHF radio certificate for inland navigation radio (UBI)

Hans Joachim Herbertz · de.herberlin.sportboot.ubifunk

Not rated yet 500+ downloads v3.0.3 2.4 MB Android 6.0+ PEGI 3 · Everyone

Download APK 2.4 MB All versions

Signature matches the Google Play version Details

At a glance

Latest version: v3.0.3 (303)
Updated: Sep 2, 2026 (1 month ago)
APK size: 2.4 MB
Requires: Android 6.0+ (API 23)
CPU support: Any (no native code)
Category: Education (app)
Listed since: Feb 7, 2021 (at least)
Permissions: 1
Website: sportboot.web.app
Developer contact: [email protected]
Privacy: Developer's privacy policy

About this APK

UBI-Funk is an app by Hans Joachim Herbertz in the Education category, listed since at least February 2021. It has no native code, so it runs on any Android processor.

Since version 3.0.1, the APK grew from 2.1 MB to 2.4 MB and the minimum Android version rose from 4.2 to 6.0. It asks for 1 permission, none of them sensitive. It asks for the same permissions as version 3.0.2.

What's new in v3.0.3

Technisches Update

Description

From the listing uploaded by “appupdater”.

Training program for the examination for the VHF radio certificate for inland navigation radio (UBI). Includes a training mode, all 12 exam sheets, and Sierra Papa, the program for practicing the international spelling alphabet.

Version history

3 versions are listed, going back to v3.0.1. Since v3.0.3 it requires Android 6.0+.

v3.0.3 LATEST Sep 2, 2026 2.4 MB TRUSTED v3.0.2 Aug 26, 2026 2.1 MB TRUSTED v3.0.1 May 20, 2024 2.1 MB TRUSTED

All 3 versions

Security & authenticity

Security rating: Trusted

Signing certificate

Signature matches the Google Play version Checked by the source store on Sep 2, 2026.
Certificate issued to “herberlin” This is the certificate of the Google Play version.
Same certificate as the 2 other versions checked

Store checks and file details

Developer signature verified Sep 2, 2026
Validated against Google Play Sep 2, 2026
Signed byCN=Hans Joachim Herbertz, O=herberlin, L=Berlin, ST=Berlin, C=DE
Signing certificate (SHA-1)55:D8:9A:6E:7C:0F:EE:82:D7:C2:F9:7B:1D:85:EC:43:CD:4F:41:E6
File MD567781fc512cf63df6880bb551179a36b
Uploaded by “appupdater” Gold tier · 117,810 followers · uploading since 2020

Scans and ratings come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures (2 other versions compared). AAPKs doesn't scan files itself — compare the MD5 and signer after downloading.

Permissions (1)

UBI-Funk requests 1 permission, none of them sensitive.

Internal broadcast protection (app-defined) de.herberlin.sportboot.ubifunk.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

Required hardware & features

Basic touch input android.hardware.faketouch

UBI-Funk APK: questions and answers

Is there a version of UBI-Funk for older Android phones?

The current version needs Android 6.0 or later. Version 3.0.2 is the newest listed build that installs on Android 4.4 and later. Get version 3.0.2 · All versions

Can I install this APK over the version I already have?

Yes, if your installed copy is older. It is signed like the Google Play version, so Android installs it as an update and keeps your data.

Is the UBI-Funk APK safe?

No one can promise that a file is safe, but some things can be checked. The source store rates this file Trusted. Its signature matches the Google Play version. It is signed with the same certificate as the 2 other versions checked. After downloading, check that the file's MD5 is 67781fc512cf63df6880bb551179a36b.