Gowtham

Only information about the multi-communities app is currently available.  To stay up to date on further news, be sure to check out the Invision Blog where future news will be posted.  
The team is excited to continue development on the mobile app and iron out all of the bugs.  

Apologies again! Update your app to get the latest build and things should be good now. At the time of this post, the app was approved in the Play Store but still pending review in the iOS App Store, but should be available soon. Note that in both stores it's still in the beta process (Beta in the Play Store, TestFlight in the iOS App Store) so you won't see it unless you specifically opt in to the beta.

@Nicholas Cole Let us know if you can actually log into and use yours.

Apologies for the problems. I was finally able to diagnose the cause of the login issues, but unfortunately they cannot be fixed until 4.5.2 (and new app builds). That should be available in the next few days. That will solve both the failed logins and the 'invalid redirection uri' error.

Web views are supported for anything that doesn't have a native view.

The steps here can be followed for changing your domain name as well. You will need to request a URL change in your client area to update the registered URL for your license before re-entering your license key in the ACP (we make special provisions for things like changing http to https or adding "www." at the beginning of your domain, but if you move to an entirely new domain you'll need to update your license with us to let us know).
With Google, if you use webmaster tools you'll need to register your new URL there and follow the steps they provide.
Otherwise old URLs will automatically redirect to the new location so long as your old domain is still pointed to your community installation.