The free trial within the Boating Marine & Lakes and Boating HD Marine & Lakes apps is two weeks. With your free trial you have access to download and update Nautical Chart & SonarChart™ as well as access Advanced Features, such as Navigation Module, Advanced Map Options and Dock-to-dock Autorouting.
The free Boating and Boating HD apps are downloaded from either the Apple iTunes Store, or from the Google Play Store, depending upon whether the device is iOS (iPhone or iPad) or Android. Find more information regarding compatibility at http://www.navionics.com/en/mobile-pc-app
After the free Boating app is downloaded to your device, simply open the app and tap the "Start Now" button and download any area in the World to begin.
Navionics mobile apps are designed to load and operate on Apple iPhones and iPads running an iOS version of 9.0 or superior and Android smartphones & tablets running an Android OS of 4.1 or superior. See the Mobile - Devices section of our compatibility page
for more information.