I used this to check my PS5 DualSense for stick drift and found my left stick was resting at 0.06 without me touching it. Confirmed the problem in under a minute and got a warranty replacement with the exact data as evidence. The tool runs directly in your browser with no download needed. Plug in your controller, press a button, and every input shows live on screen instantly. Works with PS5, PS4, Xbox, and Nintendo controllers. Completely free with no account required. I run a quick check before every important session now.
