The GST Calculator App helps you to calculate GST rates on your mobile with just a click of a button. It also supports Reverse GST Calculations and you can copy or share the calculation results as well. This Free GST Calculator App provides 5 slab configurations which you can change from the app settings. The app also has a functionality of playing a sound and vibrating the phone on key press which can be configured from the settings. GST calculator is best for people who frequently calculates GST amount for business purposes. It provides a quick calculation with a press of a button.