by Anatoly Oparin To search for pairs on an area of the closed cards. Develops memory and reaction at children and adults. Game has account of time, the list of records, skins, on/off sound. User can change a sets of pictures for pairs.
by 2Know The 2Know helps you remember numbers, such as phone numbers, by generating mnemonics consisting of word phrases. These phrases, and the word-to-number translation rules, are much easier to remember than the raw numbers.