Privacy Policy

Last updated: September 28, 2026

Mewzick (mewzick.tools) is operated by Rubichron Games LLC (“Mewzick,” “we,” “us”). This policy explains what data Mewzick collects, what it does with it, and what it doesn’t do.

The short version

Your audio — from your microphone or a file you upload — never leaves your browser. There’s no server for it to go to: every tool decodes and analyzes audio entirely on your device. Mewzick doesn’t have accounts and doesn’t sell data. Analytics and advertising, where used, are covered below.

Microphone and audio files

The Tuner, BPM Finder, and Key Finder can use your microphone, or a file you choose to upload, to detect pitch, tempo, or key. In both cases:

  • Audio is processed entirely in your browser using the Web Audio API — Mewzick has no backend to send it to, and never does.
  • Nothing is recorded, saved, or uploaded anywhere, by us or anyone else.
  • Microphone access requires your browser’s own permission prompt. You can deny it, and revoke it later, in your browser’s site settings — the tools fall back to file upload if you’d rather not use the mic at all.

What’s stored on your device

Mewzick remembers a few preferences using your browser’s local storage, so they’re there next time you visit: your chosen tuning and sensitivity, reference pitch (A4), note-naming preference, dark/light mode, and the last tool you used. This data:

  • stays on your device — it’s never sent to us or to anyone else;
  • isn’t a cookie, and isn’t used to track you across other websites;
  • can be cleared anytime through your browser’s settings (clearing site data for mewzick.tools).

Analytics

Mewzick doesn’t currently run any analytics. If we add a privacy-respecting, cookieless analytics tool (such as Plausible or Umami) in the future, it will only report aggregate numbers like page views — never anything that identifies you individually or tracks you across other sites — and this policy will be updated first.

Advertising

Mewzick doesn’t currently show any ads — the ad spaces you may see reserved on the page are placeholders. If we introduce advertising in the future (for example, through Google AdSense), this section will be updated to name the specific partners involved, and:

  • third-party vendors, including Google, may use cookies to serve ads based on your visits to this and other sites;
  • visitors in the EEA, UK, and Switzerland will be shown a consent prompt before any ad-related cookie is set;
  • you will be able to opt out of personalized advertising via Google’s Ads Settings or aboutads.info (EEA/UK/Swiss visitors, also via youronlinechoices.eu).

What we don’t do

  • No accounts or sign-up — nothing to create, nothing of yours for us to store.
  • No selling or sharing of personal data.
  • No cross-site tracking beyond what’s disclosed above.
  • No requests for permissions the tools don’t need (no camera, no location).

Children’s privacy

Mewzick isn’t directed at children under 13, and we don’t knowingly collect personal information from them.

Changes to this policy

If this policy changes in a meaningful way — most likely when analytics or advertising are actually turned on — we’ll update the date at the top and the relevant section above.

Contact

Questions about this policy? Reach us at privacy@mewzick.tools.