Last updated: September 2026.

The short version

A polling-rate test has no business collecting data, and this one doesn’t. Every measurement — event timestamps, click counts, scroll deltas — is computed in this tab and destroyed when you close it. The site is static files; there is no server endpoint that could receive your test results even if the page tried to send them.

What the page sees while you test

Pointer event timestamps and deltas delivered by your own browser — the same numbers the tester shows you. They exist only as in-memory arrays for the duration of a test run and are never transmitted.

What stays on your device

• Personal bests — your best observed Hz and best CPS per mode, stored in localStorage under mousepoll.best.* keys. That’s the only persistence this site uses; clearing site data erases them, and they never sync or upload anywhere.
• Nothing else. No cookies of ours, no analytics beacon, no session recording, no account system to breach.

What our infrastructure sees

• Cloudflare request logs — the host processes standard delivery metadata (IP address, user agent, timestamp) to serve the files and resist abuse. That’s the complete server-side picture.
• Ad network cookies — pages carry Google AdSense; the ad code may set cookies for serving and measurement, controllable via your Google ad settings. Ad scripts have no access to the tester’s data structures.

Requests and questions

Since no test data or accounts exist on our side, a deletion request effectively means “remove my email from your inbox” — happy to. Write to hello@tolerence.net or use the contact page.