Analytics usually starts by watching people who never agreed to be watched; Offen flips that order, collecting nothing until a visitor actively opts in, and then showing that visitor exactly what was recorded. Paste the tracking snippet into your pages and the Auditorium reports the metrics that actually guide decisions: unique users and sessions, page views in real time, top pages, landing and exit pages, referrers, locations, UTM parameters, and weekly retention. Every visitor gets the same interface pointed at their own footprint, where they can review each recorded visit, opt out at any moment, or delete their stored data outright. Records are encrypted end to end, user data expires automatically after six months, and first-party cookies keep the tool inside GDPR-friendly territory without third parties touching the stream. One installation tracks several websites, accounts can be shared with a team, and the consent banner adapts its colors and shape to your site design. The interface and banner speak English, French, German, Portuguese, Spanish, and Vietnamese. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. Apache-2.0 licensed.