It's not long range by any stretch. The use case is more "my group split up on a trail and I want to know which fork they took" vs "track someone across a mountain." The ghost marker system helps here too. If someone walks out of range, their last known position and direction stays on your map, so you at least know where they're heading and how long ago they traveled that direction.
This is exactly what I want for my family hikes. We carry walkie talkies right now, which is just one more thing. Awesome app!
Thank you! Would love some feedback if you try it out!