A training device for training at least one user comprising a user output interface (3) for presenting at least one training task (t) to said user (2), a user input interface (4) for inputting a response of said user (2) to each presented training task (t), means (5) for detecting a performance (p) of said user (2) on the basis of the responses input by said user (2), and means (6) for presenting rewards for the detected performance (p) of said user, wherein said rewards are selected depending on a training date (TD) on which the responses are input by said user (2) and depending on an age (A) of said user (2).