Overall, a good app, but plenty of room for improvement.
I like the huge database of maps that can be downloaded for desired regions around the world. If you have an inReach Explorer then this doesnt cost extra. I also like the Bluetooth connectivity to my inReach as it allows me to message and change settings and synchronize waypoints and contacts. So much easier to do this on my iPhone rather than on the inReachs few buttons and small screen.
Things Id like to see improvement on however are push notifications when a message is received; for some reason I dont get notified if the app is in the background. As others mentioned, the map feature is somewhat limited in the fact that you cant search using coordinates, keywords, or addresses. Instead, youd have to navigate the map manually and tap on the landmark that you want to create a waypoint on. Also, the maps are limited to topo and marine maps. I would like to be able to switch to aerial and road views (when a data connection is available). Most of the things you can do on the inReach you can do in this app EXCEPT for the Trip info (resettable odometer, timer, etc). Currently I can only do that on the inReach itself. In future releases I would like the app to permit non-inReach users to initiate messages to inReach subscribers directly (because currently they can only be initiated through the subscribers MapShare webpage which is harder to do on smartphone browsers).
Overall, not a bad app. It would be great with the suggestions mentioned above!
potatoaddict about Earthmate