Your calibration stays on your device.
Effective 11 October 2026. This page explains the current browser-only calibration and the advertising services the public site may use.
Calibration data and local profiles
MouseCalibration stores session identity, setup references, test results, excluded attempts and raw mouse-event evidence in your browser so you can resume and review a report. It also creates a local player profile that links your sessions, optional profile name, a versioned performance summary and your latest validated physical mouse setup. The saved setup includes its source session and measured movement reference so you can reuse it after confirming that the same mouse, DPI and pointer settings are still in use. The current app does not upload that profile or calibration data to a MouseCalibration account or server.
You can download your own JSON or readable report. Clearing this site’s browser data removes the locally stored profiles and sessions. A hosting provider may separately process ordinary technical logs such as IP address, requested page, browser type and request time for security and operation.
Analytics, advertising, cookies and consent
The public site may use Google Analytics to measure page use and product events such as starting or completing calibration. Analytics events deliberately exclude raw mouse movement, report identity, DPI and sensitivity results. The public site may also use Google AdSense. Google and other advertising vendors may use cookies, local storage or similar technologies to deliver, measure and limit ads.
Where required, a consent message supplied through a Google-certified consent management platform will let you manage analytics and advertising choices before eligible technology is used. Depending on those choices and your location, ads may be personalised or non-personalised. You can review personalised-ad choices in Google Ads Settings.
Learn how Google uses information from sites that use its services in Google’s partner-sites privacy information.
Current scope and changes
A local profile is not an online account. There are no user accounts, cloud synchronization or subscriptions in this release. If training subscriptions are introduced later, this notice will be updated before account, progress-sync or billing data is collected.
Advertising is kept outside the active measurement and aiming-test areas. This policy may change as the service develops; the effective date above will be updated when material changes are published.