Use APKPure App
Get Robot EV3 Helicopter Instructions 45544 31313 FREE old version APK for Android
Hướng dẫn cho robot mindstorms 45544 và 31313.
Application designed to provide instructions for robot mindstorms made by AFOL, without having an internet connection.
In this case, an helicopter, can be used for both the educational version 45544, as for retail 31313.
It also has an example program to use in the robot.
This application is not official.