We all will take the time to learn our sounders, we spend hours on the water fine tuning them and making sure we get the best out of them. We have made the Charted Waters App as user friendly as possible, but it's still a high tech fishing aid.This link will show you how to get the best out of the App, take 5 minutes and you will reap the benefits. It really is a game changer if you use it properly, what else can you hold in your hand like a compass and it tells you exactly where to cast and how far!!!!!!!!