ABCD Cards is an Android application developed by Western Washington University's Center for Instructional Innovation & Assessment. This app is designed to be used in an educational setting as a polling tool and an alternative to conventional paper cards. With a simple interface, it allows for answers to be relayed to the instructor quickly and easily.

The app's main feature is its ability to blow up a letter/color to the full size of the screen with just a single click. Clicking the arrow in the corner takes you back to the main screen. ABCD Cards is extremely easy to use and lightweight on memory and storage, with a size of only 1MB.