Downloading the app:

Android: https://play.google.com/store/apps/details?id=com.openlms.openlmsmobile&hl=en_US&gl=US

iPhone: https://apps.apple.com/us/app/open-lms/id1553337282

Setup:

The image on the left is the first page you should see after opening the app. Enter moodle.trine.edu as the site and select 'Connect to your site' and sign in.

Completion: 

After signing in, you should see the homepage as below. To access your courses, navigate to the Dashboard.