Terrafin has provided key satellite data online for anglers, divers, and researchers since 1998. Now, Terrafin Mobile gives subscribers easy access to this data from your Android phone or tablet.. Note: The Terrafin Mobile app installs with an assortment of sample charts that you can use to try the various features. Access to current data requires an active subscription to the Terrafin website, available @ $109/year. Terrafin Mobile Features: • Browse Terrafin website to easily select chart