.ADDISM File Extension
What is an ADDISM file?
An ADDISM file is a data file created by Addism, a calcualtor app for OS X. It is used to store calculation data, which includes calculation steps recorded automatically by the app or an optional title.
Addism's is a simple calculation tool with an interface that can be set as light and dark modes. You can perform a variety of calculations with the tool such as addition, multiplication, division, sin, cos, tan, and percentage. The app also allows you to share your calculations through email, Twitter, Facebook, or Messages as well as as .PDF files.