Expecting most of the functions compared to PC was a let down. For basic functions such as inputting data is fine; however, no ability to duplicate functions and filling them across rows and columns do not exist at all. Every cell entry must be done manually. For making charts, there is no option to edit data at all. All x-axis points do not exist and will input all your columns as y-entries of x=1,2,3,... only. There are only visual customizations. This app cannot substitute excel over laptop.