Really annoyed. I used this app for over a year on the free version with no issues whatsoever! In the free version, you can hike without your data on and it works perfectly without glitch. I loved this app so much I decided to buy it, now, with the "PRO" version if my data is not on, the app will record my hike in straight lines across the map as though I've teleported up the mountain! Really unhappy. This app worked like a dream until I payed for it. Two stars because I love the app, hate pro.