Crimson Research, Inc.

What’s the capital of South Dakota? How big is Rhode Island? What is the population of California? After downloading US Capitals app, those questions …

The Calc41Cx is a programmable, continuous memory RPN calculator with the following features:Access to the stack and LASTx via STO and RCL commands.20 …

Calculate loan payments, interest rates and conversions, standard deviation, percent, TVM, NPV, IRR, cash flows, bonds and more. Over 120 built in fun …

Thumbtacts allows you search your contacts using one hand.To find a contact, touch an option (a letter or character string) to proceed to the next set …