Hi. I am trying to get back into my running but feeling timid as a good friend recently had a fall and spent many long hours alone and injured on the fells because she didn't have phone reception and her family thought she was visiting someone. Is there an app or forum where one can sign in before setting off on a run and sign out when back? I live alone so won't have anyone waiting for my return, and my nearest family members live some distance away so I wouldn't want to laden them with this responsibility.