MedCalc 3.64

the author of this app says:

Here is a medical calculator that does more than 30 common equations, all of which are used in internal medicine.

Results can be saved in a database for later retrieval.

Features include:

• The ability to sort formulas by category
• Auxiliary button and jog wheel navigation
• A customizable category for your favorite formulas
• Most of the units are available either in SI or English units