Zener Cards is a free Android app developed by Ljubo Dabovic in the Lifestyle category. This app consists of 25 cards, five of each symbol - a hollow circle, a Greek cross, three vertical wavy lines, a hollow square, and a hollow five-pointed star - that are used to conduct experiments for extrasensory perception and clairvoyance.

The app allows you to test your extrasensory perception by telepathically sending the image of the symbol on the card to a friend and asking them to enter the answer. You can also test yourself by guessing the symbol on the outer side. After going through the entire deck, you will see your results. The app is easy to use and can be a fun way to test your psychic abilities.