You don't download caches to it, but you can open Waze from the Geocaching App. Set it up by making it the default map App. You might also have to set the current map to “not default” in some cases. The thread for iPhone is below, the one where I was awarded "Most Helpful Dragon" for posting, and it has a link to generally how to switch from the default map.  Once set up, tap the car "Navigate" icon from the Geocaching App, and Waze opens instead of the Maps App.   Then all you have to