Download Claus' Morse Code Trainer (Learn CW) APK v4.3

Instructions for installing Claus' Morse Code Trainer (Learn CW)

Click on the saved APK file Claus' Morse Code Trainer (Learn CW). You may experience a problem that does not allow installation.
By default, Android phones do not allow the installation of APKs from Unknown Sources (Unknown Sources), please do the following:
-> Open the downloaded Claus' Morse Code Trainer (Learn CW) .apk file. You will see a warning message as shown:



-> Click Settings (Settings).
-> Click the Turn button (Turn on).
-> Go back and select the downloaded APK file. Click the Install button (Install).

Instruction to install OBB file

+ Please download the APK file of Claus' Morse Code Trainer (Learn CW) first.
+ Then copy the APK file to your device's SD card and Install it. (Don't open it after installing)
+ Next, download the Obb file and copy the * .obb file named '' to the required location:
/ SDCARD / Android / obb / com.niesens.morsetrainer /
-> The full / absolute path of the obb file will look like this (Remember case sensitive):
If you don't have such a folder, create it manually on your SD card.