Equipment Upgrader, a free mod for Mount and Blade II: Bannerlord, is an in-game tool that helps you upgrade your equipment. It does this by searching the game database for better alternatives for each equipped item and upgrading the one with the best score.

In addition to this, it can also be used to upgrade your characters. You can upgrade each of your heroes to improve them. Moreover, it is possible to enhance your equipment and weapons to strengthen them.

You can do this by tapping the button on the inventory screen.