Hi,
What format do they come in?
Are this shp files? If they are then the bad news is that we don't support them.
You would have to package them and load them with Runtime.
But if they change frequently it's going to be a lot of work to keep them up to date.
If you have ArcGIS server available I would suggest publishing them on the server and pull them in runtime via REST end point.
Regards,
David