Monster Memory Trainer is an app designed specifically to verify and enhance the iconic memory in kids who, in a sort of competition with themselves, can test their ability to remember the location of friendly little monsters on a 4x4 grid. Despite the simplicity of the operation, after the first few levels the game becomes extremely challenging. Getting to level 10 means having higher mnemonic skills. Getting up to the 15th level or over means you can count on quality that very few humans possess. On the other hand, used with a certain continuity, this app can help to enhance concentration and memory skills, iconic or visual. The iconic memory is the memory that allows you to retain a certain amount of visual and / or spatial information, stored in recent memory. The photographic memory (visual) is memory that allows you to keep visual impressions (words, lines, shapes, colors, appearance of a person met once, etc..). An interesting variant of this type of memory, which can be explored through this app, is the so-called eidetic memory, owned by about 10% of the children and that is lost over the years. The eidetic children, after observing for a few seconds an image, can "see" it for several minutes, as if it were in front of them, describing it in detail.