HP 12C Platinum Financial Calculator 1

the author of this app says:

The Platinum version of the industry-standard HP 12c Financial Calculator adds the choice of time-saving RPN or traditional algebraic data entry as well as convenient editing features such as backspace and undo keys. Built with the same algorithms and calculation sequences you trust for real estate, banking, and finance functions every day. When you find yourself without your calculator, relax just open it on your iPhone or iPod touch. FEATURES: -Developed by HP, the original inventor of the HP 12c Financial Calculator series -Identical layout, functions and answers millions rely on -Quickly calculate loan payments, TVM, NPV, IRR, cashflows, bonds and more -Horizontal mode shows full calculator and vertical mode provides a simplified basic RPN or algebraic calculator plus tip calculation feature -In horizontal mode, click on the HP logo to show the back of the original calculator with quick references to common calculations -Keep the power of your HP 12c Platinum handy on your iPhone or iPod Touch

Requirements

Requires iOS 2.2 or later.