Navionics "Boating for iPhone and iPad", version 7.2, includes a powerful new fishfinder feature that allows you to view sonar and Navionics charts, both full screen and split screen, within the same app. Simply connect wirelessly with SonarPhone hardware, and the app automatically displays the live data. This incredibly useful feature is possible due to a new partnership between Navionics and longtime innovators of sonar technology, Vexilar, Inc.