Calculator for professional calculator, History app for iPhone and iPad

For giving you a big surprise, our developers design the app with their utmost care. So the followings are some novel features of the special app:

History function: all the calculation history can be recorded automatically based on time, in which you can scan all your history.

Expression function: all the calculation steps and expression can be presented for you, such as, 3+2+1=6, so you can check whether it is right.

Statistics function: all the history can be counted, so you can delete some one or ones that may be useless.

Replication function: all the calculation result can be replicated by long pressing the result, and you also can replicate the calculation history directly. By the way, all the replication can be sent out by email.