Garmin has finally joined the ranks of GPS nav app providers that include maps on your device rather than requiring you to download them. I have tried a previous incarnation of the Garmin app on a trip to Northern Arizona, but I only saw a blue dot and no roads since I was in a place with no cellphone reception. No data, no map.
As a result, I was pleased to make another trip up north for some landscape photography and try this latest version with full maps on board. It's a big difference. The maps seemed up to date and even had quite a few dirt roads. Even better, during a boat trip at Lake Powell the app was able to show me where I wa