That's pretty cool. I'm a casual user who might go on a hike a few times a year; thought about picking this up but $20 plus IAP (do I need to buy maps?)... is there a trial or lite version?
2) No lite/trial version besides the website (but email for a refund anytime). There will probably be a free app along soon though, useful on its own, to help market the paid products.
3) As for Gaia's IAP (GaiaPro), we added that much later, so I would call it "optional."