From knots to navigation, birdwatching to bicycling, camping to cameras and more, the iPhone seemingly has it covered when it comes to exploring the great outdoors. And so do the guys over at Adventure Journal. After testing more than 600 outdoor apps, they’ve come up with the top 107 . For a shorter list of the most useful ones, check out the author’s and editor’s picks.

And, in other news, here’s a pitch for the most important iPhone accessory yet.