I am trying to figure out if I'd be able to use Navionics marine charts on a Nexus 7. Navionics was a bit unclear about this. They said I'd need to "check with Google." I'm not sure how to do this, especially since I don't have a Nexus 7 yet. Whether I buy a Nexus could depend on whether it's compatible with a marine chart program. Navionics wrote me: Navionics Mobile app for the Android Handsets and the Navionics Mobile HD apps for the Android Tablets are two separate applications. The HD applications have been optimized for use with the Android Tablets. The Mobile apps for the Android Handsets are not compatible with the Android Tablets, and vice versa. Google classifies any device under 7" as a handset, and any device over 7" as a tablet. However, devices that are 7" could be classified as either, depending on other criteria. Please check with Google to determine which type your device is classified as, to determine which Navionics App may be compatible with your device.