It is a very useful app to improve your math calculation and keepyour brain healthy. try to play this game for a few days and youwill see that it helps to increase your mental calculation which ishelpful at school or university. There are two main modes, a singleplayer and two players. In first mode you are able to select whichmath operation you would like to train like addition, subtraction,multiplication and etc. After selecting appear a list of levelsthat you should to pass. Each level has some time and some numberof questions. every question has multiple choice. When level iscompleted you can see your score. Second mode has screen divided intwo parts where you can play against your friends or family.

Binary Arithmetic is a free application thatallows you to do some binary operations, such as addition,subtraction, multiplication, division and bit operations(And, Or,Xor) .It's a good program for School and University.It has a simple intuitive user interface.