I installed the ownCloud X (10.0.1) Trial Appliance and successfully configured it. The desktop app works flawless, beautifull as a matter fact.
I would also like to use the app of my android phone, but I can’t get it connected to the server installed on my local network, neither through IP nor local DNS name.
As far as I know the mobile Apps need the full URL to the ownCloud service like https://kcloud.domainname.intranet/owncloud.
A basic connectivity test would be to access the service through a webbrowser.
Further debugging would be to check if the connection attempt arrives in the Apache logs.