Search for Navionics Boating on the store of your device. Download the free version, then tap on Menu>Charts and select your region for a one week free trial to experience the overwhelming value of Navionics+! Or choose any paid app where Navionics+ is already included.
The Navionics+ one year subscription includes: Nautical Charts, SonarChart™, Community Edits, Chart Updates, Advanced Map Options, Navigation Module, and Autorouting (this feature isn’t available yet on Android). Nautical Chart gives access to the largest database of searchable Points of Interest available like Marinas, Repair Shops, Fuel stations/prices, etc., and Tide & Current forecasts including dynamic graphs.
With an active Navionics+ subscription, zoom in or go to Menu>Download Maps to get detail on the areas you need. Keep them up to date from Menu>Update All (Or Download Map).
More info at Navionics.com
The T-BOX (SP300) options come in a portable system with a carry case to hold the battery and suction cup mount to put on your boat. As the name implies, SonarPhone turns your smart phone or tablet into a fully functional sonar system that will rival any high end sonar on the market today.
Using Patented WiFi signal technology to transmit to smart phones or tablets. You dont need cell phone coverage to use it, the SonarPhone will work anywhere in the world. The SonarPhone creates its own WiFi hotspot and you can share your signal with as many people as you wish, the software App is downloaded for free from the App store and works with both Android and IOS systems.
SonarPhone will be offering limited world-wide distribution in 17 languages in 2014 and is available in three different configurations. All SonarPhone T-BOXes come with a neoprene arm band so you will have easy and safe access to your phone display at all times.
More info at Vexilar.com