Blue Switch

Open and close relays (BLE). This app is an alternative to the app TwoSwitchBle.

Codenia · com.codenia.blueswitch

Not rated yet 10K+ downloads v4.2 15 MB Android 8.0+ PEGI 3 · Everyone

Download APK 15 MB All versions

Signature matches the Google Play version Details

Watch the Blue Switch trailer on YouTube

At a glance

Latest version: v4.2 (35)
Updated: Sep 25, 2026 (14 days ago)
APK size: 15 MB
Requires: Android 8.0+ (API 26)
CPU support: x86 32-bit, x86 64-bit, ARM 32-bit, ARM 64-bit
Category: Tools (app)
Listed since: Jul 17, 2021 (at least)
Permissions: 18 (5 sensitive)
Website: codenia.com
Developer contact: [email protected]
Privacy: Developer's privacy policy

About this APK

Blue Switch is an app by Codenia in the Tools category, listed since at least July 2021. It includes native code for x86 32-bit, x86 64-bit, ARM 32-bit and ARM 64-bit, so it runs on practically every phone.

Since version 3.7, the APK grew from 6.8 MB to 15 MB and the minimum Android version rose from 5.0 to 8.0. It asks for 18 permissions, 5 of them sensitive, including precise location, approximate location and Bluetooth advertise. It asks for the same permissions as version 4.1. The app offers in-app purchases through Google Play and can read the advertising ID that ad and analytics services use.

What's new in v4.2

Bug fixes and improvements

Description

From the listing uploaded by “appupdater”.

This app allows you to control a 2, 4 or 8 Channel Relay Module Bluetooth BLE with your smartphone. To use this app, you need one of these three modules: "2 Channel Relay Module Bluetooth BLE" "4 Channel Relay Module Bluetooth BLE" "8 Channel Relay Module Bluetooth BLE" These modules can be ordered at many online shops. Please use a search engine to find a shop. This app can be connected with any number of modules. By entering an alias, the modules are marked clearly and can easily be assigned to a use area. Name the modules for example "Relay 1", "Relay 2", "Electronic lab project" or "Ambient Light". An alias can also be entered for each relay. The default password for these modules is usually "12345678". For more security, the app also allows you to change the password. The password must be eight digits long.

Version history

4 versions are listed, going back to v3.7. Since v4.0 it requires Android 8.0+.

v4.2 LATEST Sep 25, 2026 15 MB TRUSTED v4.1 Sep 3, 2026 15.4 MB TRUSTED v4.0 Jun 4, 2026 11.8 MB TRUSTED v3.7 Dec 18, 2025 6.8 MB TRUSTED

All 4 versions

Security & authenticity

Security rating: Trusted

Signing certificate

Signature matches the Google Play version Checked by the source store on Sep 25, 2026.
Certificate issued to “Codenia” 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 25, 2026
Validated against Google Play Sep 25, 2026
Signed byCN=Vitalij Sch?fer, O=Codenia, L=B?ckeburg, ST=Niedersachsen, C=DE
Signing certificate (SHA-1)B1:CB:6F:09:B3:04:4F:D2:90:D3:3C:E1:88:55:D6:09:58:B0:C0:2C
File MD56e78e57d4c4428da4cb2dac82fecea61
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 (18)

Blue Switch requests 18 permissions, 5 of them sensitive.

Approximate location Sensitive android.permission.ACCESS_COARSE_LOCATION
Bluetooth advertise Sensitive android.permission.BLUETOOTH_ADVERTISE
Bluetooth connect Sensitive android.permission.BLUETOOTH_CONNECT
Bluetooth scan Sensitive android.permission.BLUETOOTH_SCAN
Precise location Sensitive android.permission.ACCESS_FINE_LOCATION
Access adservices ad id android.permission.ACCESS_ADSERVICES_AD_ID
Access adservices attribution android.permission.ACCESS_ADSERVICES_ATTRIBUTION
Access adservices topics android.permission.ACCESS_ADSERVICES_TOPICS
Advertising ID com.google.android.gms.permission.AD_ID
Control vibration android.permission.VIBRATE
Full network access android.permission.INTERNET
Google Play install referrer com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE
Google Play license check com.android.vending.CHECK_LICENSE
In-app purchases (Google Play Billing) com.android.vending.BILLING
Internal broadcast protection (app-defined) com.codenia.blueswitch.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
Prevent the device from sleeping android.permission.WAKE_LOCK
View Wi-Fi connections android.permission.ACCESS_WIFI_STATE
View network connections android.permission.ACCESS_NETWORK_STATE

Required hardware & features

Bluetooth android.hardware.bluetooth
Basic touch input android.hardware.faketouch
Location android.hardware.location
Wi-Fi android.hardware.wifi

Blue Switch APK: questions and answers

Is there a version of Blue Switch for older Android phones?

The current version needs Android 8.0 or later. Version 3.7 is the newest listed build that installs on Android 5.0 and later. Get version 3.7 · 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 Blue Switch free?

The APK is free to download, but the app offers in-app purchases through Google Play.

Is the Blue Switch 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 6e78e57d4c4428da4cb2dac82fecea61.