Upon purchasing a new phone, I discovered that XymonQV was no longer in the Google Play store and the link on GitHub was 404.
I was able to export the installed app from an old phone.
If you need the XymonQV Android App, you download it here:Â Â XymonQV Android App
This is a copy of the app that was installed from the Google Play store and has not been modified in any way.