Greeks & Option Strategies (GOS) is a free Android application developed by Shree for derivative market traders. The app aims to provide traders with on-the-go analysis of different option strategies and important derivative market calculations, including Greeks Option, Currency Greeks Option, and Implied Volatility. GOS contains several modules in one package, including Greeks Calculator based on Black-Scholes Model, Implied Volatility Calculator, Option Analytics with Graph, Option Strategies with Graph, and Stock Quotes (CBOE Market).

The user-friendly GUI and compact size make it highly portable and easily downloadable from Google Play Store. GOS saves a significant amount of time for traders, and the database is maintained to make record-keeping easy. It is a handy application for any Derivative Exchange (e.g., NSE, MCX, CBOE) users to analyze their market strategy on the go. However, this app requires specific knowledge of the Derivative Market, and currently, it only provides 9 out of 22 standard option strategies provided by NSE. The Get Quotes module only provides stock quotes for CBOE Market, but support for Indian Stock Exchange Markets will be available in the new version.