Digital Gauges on Your Device. The VesselView Mobile app displays key data for one to four engines on your smartphone (Android® or Apple® iPhone®). Keep track of your fuel usage, engine temperature, battery life, rpm – or any other data points you want to see. There are dozens of data points to choose from, and you can customize up to three screens to fit your style. The information provided via VesselView Mobile is much more accurate than most analog gauges. You’ll have a much better sense of your true rpm, your fuel burn, your speed, your fluid-pressure levels – anything that can be measured on analog gauges will be more accurate with VesselView Mobile. Compatible Engines *VesselView Mobile is compatible with all SmartCraft-compatible Mercury outboards and sterndrive engines (2004 and newer, 40hp and up). For engine information, including gauge functionality, alerts and maintenance reminders, the module must be installed on the engine(s). The VesselView Mobile module connects to smartphones using Bluetooth technology.