SimpleCalcX

Ideal for simple and sophisticated calculations. Includes a Newton solver, numerical integration, and more. It knows atomic weights and has a currency table that can be updated by download from the IMF server. Small footprint at the screen. Provides the system service InstantCalc, and all calculations can be done inline when editing text in any application that supports the Service menu.

What is new in this release:

• Updated Atomic Weights of the Elements according to the latest IUPAC publication: Pure Appl. Chem., Vol. 83, No. 2, pp. 359-396, 2011.
• Fixed a rounding issue on Lion