I always thought applications like this are completely useless since there's no way to get the sensitivity / aiming engine to be the exact same as the game of your choice.
You are building all this muscle memory in this program just to throw it out the door when you change games. Half star only because the program itself is so simple yet has 400 paywall options

The MELEE of Kart,
Perfection for competitive play

One of the first games I ever played on PC.
I remember finding out by accident that if you held shift while clicking on a car that's not unlocked yet you could play as it.

My ego grew so much that day I thought I was a hacker at 7