You're referring to the Exiled Kingdoms Save Editor, a tool used to modify game saves for the mobile RPG Exiled Kingdoms. Here's some information about it:
The Exiled Kingdoms Save Editor is a third-party tool designed to allow players to edit their game saves for the mobile game Exiled Kingdoms. This editor enables users to modify various aspects of their game progress, such as character stats, inventory, gold, and more. exiled kingdoms save editor