TCompanion has incorrectly been labelled a tool app, but will soon be labelled a navigation app. Hopefully the new label will attract more buyers. The TCompanion is a really good and useful app. I use it as follows.
Before I go someplace I haven't been to before, I open TCompanion to mark the exact destination (very easy: search address and mark it on the map). Arriving in the destination city I park my car somewhere not too far from the destination. To make sure I don't have to walk very far I keep an eye on TCompanion's distance indicator. After parking, I use TCompanion to point the way to go. It works great!
I often park in a multistory car park and those often have several exits, so out in the street I mark the exit with TCompanion. In that way I can always find the exit when leaving for home.
The screen shots below, taken from the App Store, show respectively a) the search b) the marking c) saving the destination d) the pointing arrow.
And yes, TCompanion has a torch too for evening walks.