Quite ok, but a bit dangerous at times
The app works mostly fine, I like the tool to move the ring around the boat, it’s practical and easy to understand. However, at times - and without any obvious reason - the app switches itself off. This leaves you without an anchor alarm. Not very trustworthy. I always run another anchor alarm on another device. Why should I buy the pro-version if the developers cannot show me that their free app is reliable and safe at all times?! Get better and I buy your pro version, but not like the app is right now.