Privacy
DriftNo reads your controller locally in the browser to produce diagnostics. You do not need an account to test or fix a controller, and controller input is not required to leave your machine for the tool to work.
Controller data
Stick, trigger and button values are read through browser controller APIs and processed in the page to calculate metrics and your Health Score.
Local storage
Preferences such as appearance, and Premium entitlement and saved profiles where applicable, are stored in your browser. Clearing site data removes them, which is why Premium is described as browser memory rather than an account.
Payments
Premium is purchased through a payment provider; card details are handled by that provider and not by DriftNo. See in-app Settings for licence and recovery key details.