yeah but can't you use the ipads built in ssh to just use bc on a linux that you remote to?

Is this a parody of the Dropbox comment or is this sincere? I don’t think iPads have built in ssh… and even if they do, this is a far cry from an app. It assumes you have a Linux machine on your local network and are willing and able to set up ssh to connect to it as well as learn command line tooling for making calculations.