Yanfly Engine Plugins is a plugin library made for RPG Maker MV, a wonderful piece of software to help you make that role playing game of your dreams. You can find out more about RPG Maker MV here.
You can find the RPG Tool here:
Figuring out the right amount of defense values to give your actors when using the Armor Scaling plugin can be a challenge. This tool will allow you to test various defense values to see how armor scaling will affect different base damage values to help assist you in figuring out how to make armor scaling work right for your game.