Option Calculator is a free Android app developed by Stoxline that calculates option prices and Greeks using the widely-used Black-Scholes model. This app is a convenient tool for investors and traders who want to quickly calculate the price of European-style options and assess the impact of different factors on the option price.

The Black-Scholes model is a mathematical model of a financial market that is used to price certain derivative investment instruments. The model provides a formula that gives the price of European-style options, and many empirical tests have shown that the Black-Scholes price is fairly close to the observed prices. With Option Calculator, users can easily calculate option prices and Greeks, including delta, gamma, theta, vega, and rho, using the Black-Scholes model. This app is compatible with Android 2.3 or above and is a great tool for anyone who wants to make informed decisions in the options market.