Online manual at:
https://www.aartbik.com/android_manual.php

NOTE:
This package is only useful in combination with a chess GUI that supports the Android Chessbase compatible format.

The application packages various binaries (armv7 arm64 x86 x86_64) of the UCI chess engine BikJump v2.5 in Android ChessBase compatible format. This mean that the chess engine can be directly imported on a wide variety of Android devices into any chess GUI that supports this format. The recommended GUI is Chess for Android.