You can use your community with the Oceanhub app. Download it here:
When you first open it you need to login to see other communities.
Then open the menu
When in the menu swipe right to see the available communities for you.
Choose Your commmunity:
Now you can see your Intranett!
You can again use the menu as in web to access all features of your intranett.
The app will remember this choice until you restart your phone or quitting an app. Also when you receive push notifications from a certain community. You will be directed into it when open the notification. Unless you connect with users that then send you messages or follow specific groups the oceanhub community will not push notifications to you.