[Zubersoft]

If you set up two different accounts in Windows, the installation of MobileSheets should be separate for each account. All of the application data is stored under C:\Users\<your username>\AppData\Local\Packages\41730Zubersoft.MobileSheets_ys1c8ct2g6ypr, so each user has a complete different application directory. It's pretty easy to set up additional users in Windows and switch between accounts.

Mike