On the Garmin site there is a link to the Apple Store to download their Earthmate app. I get there and take the link to Earthmate but don't see anywhere to hit a button to download the app. I am assuming, which is dangerous when you don't know stink, that I download Earthmate to my iMac, then hook up my iPhone and transfer it there. Pls advise as to where I am lost. Thanks. j