katrin,
Yes, of course OSMTracker files contain latitude and longitude information. That’s why it’s called TRACKER.
Not having received an answer to my question about whether I can upload OSTracker files, I decided to upload several tracks from a recent hike. They uploaded fine and the photos disappeared from my phone. (If I hadn’t taken the precaution of making a copy first, you’d be hearing from my lawyer. You need to change that or make it explicit that photos will be removed.) The uploads seemed to go fine, but nothing shows up on the list of my uploads. So, what happened to the stuff. OSMTracker “tracks” consist of a GPX file and associated photos. Did they upload? Or are you processing them? What happened?