Apps as guidebooks
Apps can be great nature guides. The moment you see an animal or plant you can look it up on your phone. Unlike your fieldguide that lays at home on a shelf.
I am just starting. The first app is one for divers in the national park Oosterschelde in the Netherlands. A Dutch language native app for Andoid and IOS. Apart from the species covered divers get info about tides and weather and the divesites. All the information you need to prepare a dive.
Further development depends on where cooperation with other nature enthusiasts will bring me.