Making a application for my team!

Can i use widgets and connect to a database to make a application for my team?

The application is not a game and requires the user to login though a SQL database to access events happening. so its not really a game just an accual application as i’am really good with widgets
it would make my work easier instead of using android studio for example. The application will be used privately between members of the team and nobody else. Also i want to use widgets due to animations being way easier as well and the coding in blueprint.

or any good tutorials on how to add FireBase to ue4 using c++? i don’t want to spend 200€ on a plugin :3

This image represents android section on UE4 forum.