Usually I’m not a great fan of Apps however these are free and are provided by the Wilderness Society the National Wildlife Federation.
‘Every season is right for kids to play outside and explore the world around them. Here are some organizations, books, apps, and nature centers to help you get out there!
“When a child is out in nature, all the senses get activated. He is immersed in something bigger than himself, rather than focusing narrowly on one thing, such as a computer screen. He’s seeing, hearing, touching, even tasting. Out in nature, a child’s brain has the chance to rejuvenate, so the next time he has to focus and pay attention, perhaps in school, he’ll do better…But even if kids don’t have any of the specific problems mentioned above, kids who don’t get out much lack the sense of wonder that only nature can provide.” — Richard Louv from an interview with Scholastic