djay for Android is available free of charge from Google Play.

https://play.google.com/store/apps/details?id=com.algoriddim.djay_free&hl=en_US&gl=US

Please refer to the Hardware diagram below for the functions controlled by DDJ-200.
Hardware diagram for djay for Android

Supported wireless system: Bluetooth Low Energy (MIDI standard compliant)

*Pioneer DJ does not guarantee normal operation of all types and models of smartphone and tablet.
*Before purchasing DDJ-200, please test the Android device you use with edjing Mix to make sure the application properly works with your Android device.