Eidetic

Eidetic is a mobile application that uses a technique called spaced repetition to help users memorize anything important.

Eidetic is a mobile application that uses a technique called spaced repetition to help users memorize anything from important phone numbers to interesting words or facts. It is a memory challenge that gives its users an opportunity to exercise their brain and has 3 brainteasers all of which gives them only 4 seconds to memorize. It is completely free and does not offer any in-app purchases. Eidetic was launched in 2012.