Cookie Policy

Effective date: 16 October 2025

Cookie Policy — Metronome-Online.org

This policy explains how Metronome-Online.org (“we”, “us”, “our”) uses cookies on our website. We minimise data collection and use only what is necessary to operate a reliable, privacy-friendly web metronome.

1) What are cookies?

Cookies are small text files placed on your device by websites you visit. They help a site remember information about your visit. We use a small number of first-party cookies for core functionality, and our advertising partner BuySellAds (“BSA”) may set third-party cookies for ad delivery and measurement.

2) What we use — at a glance

Strictly necessary (functional): one first-party cookie to remember your metronome settings.
Analytics: self-hosted Matomo configured without cookies (anonymised, aggregated metrics only).
Advertising (third-party): BuySellAds may set cookies to deliver and measure ads. You can disable ads at any time via the “Cookies / Ad Settings” link in our footer; when disabled, we do not load BSA tags and no BSA ad cookies are placed.

3) Legal basis & consent

In the EEA/UK, consent is not required for strictly necessary cookies used to provide the service you request. We request your consent before setting any non-essential advertising cookies. You may withdraw consent or disable ads at any time.

4) Detailed list of the cookie we use

Name	Provider	Type	Purpose	Expiry
`metronomeSettings`	Metronome-Online.org (first-party)	Strictly necessary cookie	Remembers your metronome preferences (e.g., tempo, subdivision, sound, volume) so they persist between visits. Contains no personally identifiable information.	Up to 12 months or until you clear cookies in your browser.

Matomo analytics: self-hosted and configured without cookies — no analytics cookies are set.

When ads are enabled (and where consent applies), BuySellAds may set cookies or use similar technologies for ad delivery, frequency capping, fraud prevention, and performance measurement. Names and lifetimes can vary. Examples you may see include:

Name (examples)	Provider	Category	Typical Purpose	Expiry
`_1387518753`, `u__1387518753`	BuySellAds (third-party)	Advertising	Ad delivery/measurement identifiers; session linking.	Set/controlled by BSA.
`adagio`	BuySellAds (third-party)	Advertising	Session/navigation metrics, bid sampling, view sampling, performance controls.	Set/controlled by BSA.
`ix_features`	BuySellAds (third-party)	Advertising	Feature flags for ad delivery/format support.	Set/controlled by BSA.
`vdzHum`, `vdzwopt`	BuySellAds (third-party)	Advertising	Fraud prevention/optimisation toggles.	Set/controlled by BSA.

Note: The exact naming, values, and lifetimes of third-party cookies are managed by BuySellAds and may change over time. Refer to BuySellAds’ privacy/cookie documentation for authoritative details and opt-out options provided by them.

5) Managing cookies

Block or delete cookies: use your browser’s privacy settings to block or remove cookies for Metronome-Online.org.
Impact of disabling: the metronome will still work, but your preferences will not be remembered between visits.

6) Changes to this policy

We may update this policy to reflect technical or legal changes. If we introduce non-essential cookies, we will request consent where required and update this page before activation.

7) Contact

If you have questions about this Cookie Policy, please contact us via the contact page on Metronome-Online.org.