Tiggr - Interactive Web and mobile HTML prototypes. Where's My Car - App Inventor for Android. You parked somewhere near the stadium or bar, but when the concert/party ends you don't have a clue where the car is. The friends you came with are equally as clueless. Fortunately you haven't lost your Android phone that never forgets anything, and you remember you have the hot new app, Android, Where's My Car? . App Inventor for Android.