Privacy Policy - Your Audio Data Stays Private & Local

This policy explains how Tyr, the operator of Online Decibel Meter, handles microphone data, browser-local measurement data, site delivery, analytics and advertising verification.

What We Access

Microphone audio is analyzed in your browser only. We do not create audio recordings or upload audio, live readings, calibration values, saved history, exported files, email addresses, or free-text content to advertising or analytics services.

Advertising Partners

Google AdSense is the only intended advertising service. Its page-level ad script is currently paused during review; the publisher verification meta tag and ads.txt record remain and do not themselves place an ad cookie. If ads are enabled, Google may use cookies, web beacons, IP addresses, device data and identifiers for delivery, measurement, fraud prevention and, where permitted, personalization. A Google-certified CMP must control consent in the EEA, United Kingdom and Switzerland before ad requests are restored.

Analytics and Performance

Google Analytics 4 (measurement ID G-BTPD1Y7KP9) and two self-hosted Umami instances (website IDs be1705eb-0b72-475e-9d8d-d68e2843507e and 07f75a06-e497-4792-a890-dd0e5e52c99d) load on every visit. GA4 uses first-party identifiers such as _ga and collects default visit, approximate-location, browser and device data; Google states that IP addresses are used at collection time and discarded before logging. GA4 disables Google Signals and ad-personalization signals, and receives a page location without query strings or URL hashes. Both Umami instances are cookieless, honor Do Not Track, and exclude query strings and hashes. We never send audio, readings, calibration, history, email or free text to analytics services.

Local Storage Only

Calibration offsets and measurement history are stored in browser localStorage on your device and are not synchronized to our servers. The site may also store the functional NEXT_LOCALE preference. You can remove these items with the tool's controls or by clearing this site's browser data.

Service Providers and Ordinary Site Data

Google Analytics 4 and our self-hosted Umami analytics load on every visit. GA4 may set first-party _ga cookies and process user and session statistics, approximate geolocation, browser and device information, page path, referrer and timestamps. Site delivery, Umami and Cloudflare may also process ordinary network data including IP addresses. We do not sell microphone audio or measurement data.

Browser Security

Modern browsers protect your privacy by requiring explicit permission for microphone access. You can revoke this permission anytime through your browser settings. The Web Audio API we use is designed with privacy in mind—it processes audio without creating recordings.

Your Choices and Retention

GA4 and Umami are always loaded for audience measurement. You can clear GA4 cookies or use browser privacy controls and content blockers; Umami is cookieless and honors Do Not Track. AdSense page scripts remain paused. If Google's CMP consent mode for analytics is enabled, it can update analytics_storage signals from EEA, UK and Swiss choices. You can revoke microphone access and clear local data at any time.

Questions?

If you have concerns about privacy or how this tool works, contact us at [email protected]. We're happy to explain our approach in more detail.