YAPC is a general purpose scientific calculator for MacOS X and Windows that uses a pad interface instead of traditional buttons. The pad allows you to type an entire formula, execute it and edit as many times as needed. All calculations on your pad will be updated.

YAPC is a freeware. Documentation is included with the download.

Download
Readme 12KB, RTF
Window XP 1.4, ZIP
MacOS X 2.9MB, ZIP