An information processing system includes programs so as to implement a memory unit storing, for each application executing a sequence of processes using electronic data, program identification information of identifying at least one program executing the sequence of processes, a parameter used to execute each program, and flow information defining an execution order of the at least one program while associating app identification information with the program identification information, the parameter, and the flow information, an acquiring unit acquiring the flow information; and an executing unit causing each program identified by the program identification information to execute the sequence of processes, the executing unit replacing, when a data value of a data item included in the parameter used to execute the program is designated to be replaced by another data value, the data value with the other data value.