Q. Are there any Android Apps available for Qu series mixers?

A. There is now an Android version of Qu-You available:

https://play.google.com/store/apps/details?id=com.allenheath.qumon

There are currently no plans to develop Qu-Pad for the Android platform.

You might want to look at a 3rd party app for the Qu series:

Mixing Station: https://dev-core.org/mixing-station/ 

Please note 3rd party applications are not directly supported by Allen & Heath.