Welcome to our Android beta tester program 
Thank you for everyone that tried our latest update of the Audirvāna Remote app. We will keep an eye on your suggestions as the development of the Remote is not over.
We have now made the 4.0 update of the available for everyone so you can all enjoy the remote on your tablet in horizontal mode. (note that the auto switch from Horizontal/Vertical is not active yet)
Since you are in the Beta channel of the Remote, you will need to quit it to get the 4.0 update 
How to stop being part of the program?
You need to uninstall the app, go on Audirvāna Remote page and scroll to the bottom of it, an option to leave the beta program will be displayed