Gamepad Tester Pro

Most online gamepad testers stop at “is the button pressed?” — useful for a five-second sanity check, useless for diagnosing why your aim drifts or your inputs drop. The signals that actually predict in-game behaviour are quantitative: the resting offset of a stick (drift), how round a full rotation traces (circularity), how small a deadzone you can run before noise leaks through, how fast and how steadily the controller reports state (polling), and whether a button registers exactly one clean event per press (bounce/chatter).

This tester reads those directly from the browser's Gamepad API and runs them through a verified analysis engine. Stick drift is the averaged resting position with a jitter-based stability score; a magnitude over ~6% is where most players start noticing unwanted movement. Circularity traces your outer-ring rotation and scores how close the radius stays constant — competition-grade sticks hold ~97%+. Polling is measured from state-change timing, with the caveat that browsers and display refresh cap what's observable, so treat it as a floor, not a ceiling.

The Competitive Audit folds these into genre-weighted readiness scores because the same controller can be great for a platformer and marginal for a twitch shooter: FPS leans on drift and circularity, fighting games on input reliability and polling, racing on gate accuracy. None of it is guesswork or AI — it's deterministic math you can reproduce, and nothing leaves your device.

Use it to decide whether a stick needs a deadzone tweak or a Hall-effect replacement, to validate a repair, to compare a new controller against an old one, or to generate a report for a warranty claim. Pair it with the other diagnostics in the suite below.