Custom iOS App authentication? (http/oauth, etc)?

Hey guys.

We’re trying to create a iOS application using our currently website WP backend. We use WP-API to have all the endpoints ready for our web frontend application, and We would like to re-use all of the endpoints for the iOS App.

The problem is with the authentication. As far as I understand, browser authentication uses cookies to keep the requests associated to an user.

I’ve doing a little bit of research and I’ve managed to use oAuth to authorize our app in the WP backend (using WP-API OAuth plugin), however, from a User Experience point of view, is not good that the browser is opened to authorize your account.

Is there any other solution someone has managed to deal with this iOS app authentication ?

Thanks in advance!