I have a working openvpn connection on a ubuntu laptop. When I export it (using network-manager) I get a conf file. I need an ovpn file so I can configure my openvpn app on my iPhone. I also have a crt file which I used to configure my laptop with - if it's any help. Trying to send the conf file to via mail and import it yielded an error message about a missing crt file. Sending the crt file create a profile that I'm not aware how to use.
So the simplest solution (to me at least) is to convert the conf+crt to ovpn file. Can it be done? Other suggestions on how to make the app are also appreciated...