mem

"Leitner's System" is a memory tool designed by Sebastion Leitner in 1972, using flash cards to memorise words or phrases. It is a simple implementation of the principle of spaced repetition, where cards are reviewed at increasing intervals. "Hand Computer" app is designed to simulate the Leitner system and is a simple, convenient and effective memory tool for any foreign language student or simply a tool to help you study and remember any subject. When you find a word or phrase or equation