Using the SanDIsk Wireless Drive on a 12" MacBook

there is no app for a Mac. You can use the web interface to access the drive but the functionality is pretty limited in the web interface. 

IIRC the new mac has a single USB tye c port that is used for charging. A better drive would probably be the sandisk type c dual drive. https://www.sandisk.com/home/mobile-device-storage/ultra-dual-usb-type-c