I got Vessel View going yesterday for our 60 hp Merc and I really like it. Better and easier than wiring in gauges. It has a broadcast module that plugs into the obdi(?) port off the motor and then you download the app to your phone. The white on black display is good even on a phone mounted on the helm console in bright daylight. Many customizable reporting functions on up to three pages. It also gives you the wind+direction, ambient air temp, and heading but those are very small!

I still need to figger out how to get the total gallons burned displayed on the pages I have. They are there but a click or two down in. You are only allowed one user at a time. The module will not be visible via bluetooth to anyone else if a user is already logged in.