Yes it’s one of the four I referred to! (others are Spiders otNW, Insect oNE, Mushrooms oNE)
Yes I would definitely recommend it, but it’s not perfect. I feel like I need to get a lichen expert with me on a nature walk to help me understand how to read it. I like the simple ID style: on soil/rock/wood X crustose/foliose/fruticose but there are many exceptions that don’t fit into that matrix. Short answer: yes. Not much else that even tries to do the same thing.