COLREGs Sound & Signals

ColRegs rules 34 to 37 and annex IV

madeof.blue · com.xf.sig

Not rated yet 50K+ downloads v2.3 32.5 MB Android 5.0+ PEGI 3 · Everyone

Download APK 32.5 MB All versions

Signature matches the Google Play version Details

At a glance

Latest version: v2.3 (23)
Updated: Nov 18, 2025 (11 months ago)
APK size: 32.5 MB
Requires: Android 5.0+ (API 21)
CPU support: Any (no native code)
Graphics: OpenGL ES 2.0+
Category: Education (app)
Listed since: Nov 1, 2022 (at least)
Permissions: 9 (2 sensitive)
Website: madeof.blue
Developer contact: [email protected]
Privacy: Developer's privacy policy

About this APK

COLREGs Sound & Signals is an app by madeof.blue in the Education category, listed since at least November 2022. It has no native code, so it runs on any Android processor.

It asks for 9 permissions, 2 of them sensitive: read shared storage and modify shared storage. It asks for the same permissions as version 2.2. The app offers in-app purchases through Google Play.

Description

From the listing uploaded by “appupdater”.

Learn the ColRegs sound and light signals. This app helps you learn ColRegs rules 34 to 37 and annex IV. The app is free with premium content, ad free, and does not require an internet connection. It does not collect or share any user data.

Version history

3 versions are listed, going back to v2.1.

v2.3 LATEST Nov 18, 2025 32.5 MB TRUSTED v2.2 Nov 26, 2024 32.5 MB TRUSTED v2.1 Nov 15, 2024 32.5 MB TRUSTED

All 3 versions

Security & authenticity

Security rating: Trusted

Signing certificate

Signature matches the Google Play version Checked by the source store on Nov 18, 2025.
Certificate issued to “x” 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 Nov 18, 2025
Validated against Google Play Nov 18, 2025
Signed byCN=x, OU=x, O=x, L=x, ST=x, C=x
Signing certificate (SHA-1)28:9D:10:AB:56:24:0F:1A:F3:94:DB:05:98:D8:A5:BF:A9:B5:FA:5B
File MD5abb0054c6971304e0dd660ba8fe4699b
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 (9)

COLREGs Sound & Signals requests 9 permissions, 2 of them sensitive.

Modify shared storage Sensitive android.permission.WRITE_EXTERNAL_STORAGE
Read shared storage Sensitive android.permission.READ_EXTERNAL_STORAGE
Control vibration android.permission.VIBRATE
Full network access android.permission.INTERNET
In-app purchases (Google Play Billing) com.android.vending.BILLING
Internal broadcast protection (app-defined) com.xf.sig.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
Reorder tasks android.permission.REORDER_TASKS
View Wi-Fi connections android.permission.ACCESS_WIFI_STATE
View network connections android.permission.ACCESS_NETWORK_STATE

Required hardware & features

Basic touch input android.hardware.faketouch
Portrait screen android.hardware.screen.portrait
Sensor accelerometer android.hardware.sensor.accelerometer
Wi-Fi android.hardware.wifi