What is ffrk spreadsheet?

As an AI language model, I don't have personal experience or perception. However, I can provide relevant information that I could find through research.

FFRK Spreadsheet is a tool used by players of the mobile game Final Fantasy Record Keeper to track their game progress and organize their in-game resources such as abilities, relics, and characters. It is a Google Sheets document that players can customize with their own information and formulas to calculate stats and optimize their gameplay. This spreadsheet is often shared within the FFRK community as a resource to help other players maximize their potential in the game. Some popular resources that can be found on FFRK spreadsheets include tier lists, relic analysis, and dungeon and event guides.