All 50 Plates is a free iPhone app developed by Intangible Software LLC. It offers a fun way to pass the time during long car rides by challenging users to find license plates from all 50 states and the District of Columbia. The app allows users to keep track of the plates they find, mark them off, and even hide the ones they've already spotted.

With All 50 Plates, users can easily reset the game for each trip, ensuring a fresh challenge every time they hit the road. This app is a great companion for road trips, offering an engaging activity that adds an element of excitement to spotting license plates.