OK, I confess it: I'm feeling all app'd out. For marine navigation and chart plotting alone, I'm running three or four different apps on two Apple devices, plus a couple more on my mid-size Android tablet, plus three or four additional full-fledged navigation software programs on my desktop and laptop. (Yes, I know, testing all these is part of my job....) Over the years I've been thrilled by all the functionality such apps have brought to navigation when sailing - what a difference from the old days when I navigated Downeast in the fog by noting which way tidal currents were tugging the lobster pots! But I'm also somewhat amazed that app developers keep introducing more and more new apps not really all that different from what's out there. Must be something about the free enterprise system. So ... today I just finished reviewing the SEAiq navigational app, just one of the more recent ones, and ended up concluding I'll stay with the tried-and-true apps I've been using. It's worth looking into if you're still new to apps, but if like me you've been happy with what you already have, I wouldn't go rushing off to the app store.