1. Thanks for catching this, I totally missed it was still in meters, it will be feet in my next update. I'll release a fix soon.
2. I would like to build a mapping with tracking feature, I am working on databases right now to add data tracking to the app, I would then move on to using it for the mapping. Sql and mapping are both new for me, so I have much learning to do.
Thanks for the comments, please keep them coming.