The Fox Marine App connects to Fox Marine Engine Gateways via bluetooth to display your boats engine data on your iPhone or iPad. Engine Gateways are available for MEFI-1/2/3/4/5/6 ECMs, Motorola ECM/PCM 555 variants, ECM-07/08 (Volvo Penta 3G/4G, PCM/Crusader 3G/4G, Indmar 3G/4G, Ilmor 4G), and PCM-09. Engine data is viewable in table (list view) format with options for either normal font or large font size. The ability to read and clear engine codes is now available for all Engine Gateways. Fox Marine Engine Gateways are available at http://fox-marine.com. Data from twin engines cannot be viewed simultaneously with this App (users must switch between each engine on the engine gateway selection screen).