TouchFin Black-Scholes edition

Touch Fin Black-Scholes Edition is an RPN financial calculator. This app implements many features of the industry-standard HP-12C, with some rarely-used functions replaced by Black-Scholes features. It is a 12C updated to the 21th century!

Black-Scholes functions supported by this app: price of calls and puts, implied volatility, greeks, N'(x), N(x), d1, d2, number of business days between two dates.

The interface is the cleanest possible: just the calculator filling the whole screen. The app supports three numeric formats: American (999,999.00), European (999.999,00) and Indian (9,99,999.00), and supports copy of the value to the clipboard. Touch the left upper corner of the calculator to open the menu and get access to these features.

Other features: portrait layout, quick guide, saving memory images, 100% fullscreen, keyboard feedback, and more.