The app
I have developed a dedicated app for Android to act as a bidirectional remote control. Android App. Follow the link to get more info.
At this moment I use a configurable app to send UDP packages. You can find it in the Google Play store here.
I'm looking for help on building a real dedicated app. If you have experience in building apps for Android or iOS, and would like to contribute to this initiative, please contact me.
You can use the restore backup functionality and use this backup file to make the controller look and work like the image above.