Arccos Caddie's data downloading requirements are mostly limited to the downloading of course information and maps before you start your round. This can be done over wifi or via a mobile data plan. The amount of data required to download a course varies, but is typically well less than 5mb. During a round, Arccos uses minimal data and can actually function without a data connection at all.
Note: If you log out of the Arccos Caddie app, you will clear all of your previously downloaded courses.
Downloading a Course: