To open the class in the app, download the dd5 file, click it when it finishes downloading. It'll open in the app and ask if you want to import it click yes, and you'll be able to find it in your app from there forward.
Please use this board to share custom content files for the D&D3.5 and D&D5e applications for android.
The 3.5 app can be downloaded here:
Online Content Creator for 3.5
All content in one file can easily be downloaded here:
Online Content Creator for 5e
Online Character Manager for 5e
Read the latest review of the Complete-Reference app