We go out everyday to play with friends all the costs generated in the process often shared equally by everyone, then you need to have a convenient tool to help record and calculation of cost of the project how much money each person should be assessed, and sometimes everyone in the activities Expenditures may also be a pen costs, this tool can also help you calculate how much money or take longer to pay back how much money, eliminating the need for paper records of each used to bring charges, as well as computing time.