InstaCalc is a free Chrome add-on designed to enhance the user experience for Pokémon Showdown players. This tool provides a convenient button that, when clicked, opens a new tab featuring the Official Pokémon Showdown damage calculator. It automatically fills in all the relevant game information, saving users time and effort during gameplay.

This add-on is particularly useful for players who frequently engage in battles, as it simplifies the process of calculating damage outcomes. By integrating the damage calculator directly into the user interface, InstaCalc allows for seamless transitions between strategizing and executing moves, making it an essential tool for serious Pokémon trainers.