When you're 50 miles offshore targeting Grouper, cell service is non-existent. Most fishing apps become useless the moment you lose signal - leaving you blind without charts, waypoints, or navigation. That's dangerous and frustrating.
Fish Fathom was built by offshore anglers who understand this problem intimately. Our app works 100% offline with downloaded maps. Every feature - NOAA charts, relief shading, waypoints, routes, navigation - functions perfectly without any internet connection whatsoever.
You're not streaming maps from a server. You're not hoping for a weak signal. You download the charts you need before leaving the dock, and then Fish Fathom works flawlessly all day, every day, anywhere in the world. That's the way a serious fishing app should work.