PocketMath is a new app coming from Synlight Development for the mathematician on the go! Currently in development are multiple editions from basic math to advanced math (Calculus/Differential Equations/Linear Algebra, etc). After going through testing from multiple accomplished mathematicians, the app has been quoted as being "a useful way to remember what we should but can't remember." With equations and examples for quick and easy reference for free, what's stopping you from grabbing it once it comes out?
Contact brettthegolfer@comcast.net for any inquiries on application information.