Harmonu

Privacy Policy

Last updated: November 2026

This policy explains what happens to your information when you use harmonu.com ("Harmonu", "we", "us"). We keep it short and plain on purpose.

The short version

  • Your microphone audio is processed live in your browser. It is never recorded, stored or uploaded.
  • You do not need an account, and we do not sell your data.
  • We use Google Analytics to understand how the site is used. Where the law requires it, only after you consent.
  • We remember your light or dark theme choice in your browser.

Who we are

Harmonu is a free website that offers online instrument tuners. If you have a question about this policy, write to us at contact@harmonu.com.

Microphone audio

Harmonu asks for permission to use your microphone only to detect the pitch of the sound you play, in real time. The audio is analysed on your own device by your browser, using the Web Audio API. It is never recorded, never stored, and never sent to us or to any other server. You can stop at any time by turning the microphone off in Harmonu or by changing the site permission in your browser settings.

Information we collect

  • Usage data. Pages viewed, approximate location (country or city level), device type, browser, operating system, language, and how you arrived at the site. This is collected through Google Analytics (see below).
  • Technical data. Our hosting provider may log technical data such as your IP address, the page requested, the date and time, and your browser type, in order to deliver the site and keep it secure.
  • Messages you send us. If you use the contact form or email us, we receive your name (if you give it), your email address and your message, so that we can reply.
  • Theme preference. Your light or dark choice is stored in your browser only. It is not sent to us.

We do not collect audio recordings, we do not offer accounts, and we do not take payments.

Google Analytics

We use Google Analytics 4, a service provided by Google, to measure how many people visit Harmonu and which pages are useful. It uses cookies or similar technologies to recognise a browser between visits, and we see the results as combined statistics. According to Google, Google Analytics 4 does not log or store individual IP addresses.

Where the law requires your consent (for example in the European Union and the United Kingdom), we load Google Analytics only after you accept analytics cookies, and you can change your choice at any time. You can also block Google Analytics with the Google Analytics Opt-out Browser Add-on. To learn how Google uses data from sites that use its services, see Google's explanation.

Cookies and local storage

The details, including the exact names and durations, are in our Cookie Policy.

How we use information

  • To run, secure and maintain the site.
  • To understand how the site is used and to improve it.
  • To reply to your messages.
  • To meet legal obligations.

If you are in the EU or UK, our legal bases are your consent (for analytics cookies) and our legitimate interests in keeping the site secure, understanding its use, and answering your messages.

Who we share information with

We do not sell your information. We use a few service providers to run the site:

  • Our hosting provider (Cloudflare), which serves the site and keeps technical logs.
  • Google, for Google Analytics.
  • An email delivery service, which carries messages sent through the contact form to us.

We may also disclose information if the law requires it.

International transfers

Our providers may process data in countries other than yours, including the United States. Where required, they rely on recognised safeguards such as standard contractual clauses or data protection frameworks.

How long we keep information

  • Analytics data: up to 14 months.
  • Server logs: a short period, as set by our hosting provider.
  • Contact messages: as long as needed to reply and follow up, then deleted.
  • Theme preference: until you clear your browser data.

Your rights

Depending on where you live (for example under the GDPR in the EU and UK, or Moroccan Law No. 09-08), you may have the right to access, correct or delete your personal data, to object to or restrict its use, and to withdraw consent at any time. To use these rights, email contact@harmonu.com. You also have the right to complain to your local data protection authority.

Children

Harmonu is not directed to children under 13, and we do not knowingly collect personal data from children.

Security

The site is served over HTTPS and we take reasonable steps to protect your information. No method of transmission or storage is completely secure, so we cannot guarantee absolute security.

Changes to this policy

We may update this policy from time to time. The date at the top shows when it was last changed. If we make important changes, such as adding advertising, we will update this page first.

Contact

Questions about privacy? Email contact@harmonu.com.