Android: When you need to do something simple like find your way back to way back to your car, you can always mark your location on a map. However, if you want to track the entire path back to where you started from, Path Finder can help.
The app begins tracking your movements wherever you are to begin with. You can tell it when to stop tracking and, at any time, open up the app to see the way back to your original location. It's pretty straightforward and, while it might not be necessary all the time, it can be a lifesaver if you get lost in an area without adequate signage.