Last updated: June 10, 2026
TunerBench ("we", "us") operates the website tuner-bench.com, a collection of free automotive calculators. This policy explains what information is and isn't collected when you use the site.
Every calculator on TunerBench runs entirely in your web browser. The numbers you enter - tire sizes, horsepower targets, engine specifications - are never transmitted to our servers, stored, or shared. There are no user accounts, and we do not ask for or collect names, email addresses, or other personal information.
One exception: the VIN Decoder sends the VIN you enter to the U.S. government's public NHTSA vPIC service to retrieve vehicle specifications. The VIN is sent directly from your browser to NHTSA; TunerBench does not store, log, or receive it. NHTSA's handling of queries is governed by its own federal privacy policies.
Shareable log reports: the Datalog Analyzer can create a share link for an analyzed log. If you use it, the graded summary (letter grades, key numbers, and a small boost curve) is packed into the link itself. Nothing is uploaded to us or stored on any server, and your raw CSV file never leaves your browser. Anyone you send the link to can read that summary, so treat the link like you would a screenshot of your results.
TunerBench is supported by advertising. We use Google AdSense, a third-party advertising service. Google and its partners may use cookies and similar technologies to serve ads based on your prior visits to this website or other websites.
For more information on how Google uses data when you use sites that use its services, see Google's privacy & terms page.
We may use privacy-respecting analytics to understand aggregate traffic patterns - which calculators are used most, what countries visitors come from, and similar non-identifying statistics. This data is aggregated and cannot be used to identify you personally.
TunerBench itself does not set cookies for its own functionality. Cookies present on the site originate from the third-party advertising and analytics services described above. Most browsers allow you to refuse or delete cookies through their settings.
If you visit from the European Economic Area, the United Kingdom, or Switzerland, you will be shown a consent message before any personalized advertising cookies are set, in accordance with the GDPR and applicable Google consent requirements. You may decline personalized ads and still use every tool on the site.
This site is not directed at children under 13 and does not knowingly collect personal information from anyone, including children.
If this policy changes, the revised version will be posted on this page with an updated date.
Questions about this policy can be sent via the details on our About page.