A free app for Android, by Camberí.

Parkify – Where is my car is a location tracking app that automatically detects when you park your car. No more fiddling with your phone’s location tracker or having to manually enter where you have parked. Just have the app check for you and then you can follow the walking directions to get back to it.

It uses a Bluetooth connection to be able to track your car, and the app automatically detects when you are stepping out of a moving vehicle. Your automobile doesn’t have Bluetooth? Not to worry! To detect when you exit a moving vehicle, we employ motion detection. This is handled by the operating system, which uses sensors with low energy consumption.