Clef
Key Signature
Ledger Lines
Name this note
Last updated: 19 April 2026
Clef Trainer ("we", "us", "our") is a free music reading practice tool available at www.cleftrainer.com. This policy explains what information is collected when you use this site, how it is used, and what rights you have over your data.
We do not require you to create an account and we do not collect any personal information directly. However, third-party services used on this site — in particular Google AdSense — may collect data as described below.
We do not collect, store or process any personally identifiable information ourselves. No registration, login, or form submission is required to use Clef Trainer.
Your practice session data (correct answers, streak, score) is held only in your browser's memory for the duration of your visit and is never transmitted to any server.
Standard web server and CDN access logs may record your IP address, browser type, referring URL, and the pages you visit. These logs are used solely for security and performance monitoring and are not used to identify individual users.
This site uses cookies in two ways:
You can control or delete cookies through your browser settings at any time. Disabling cookies may affect the display of advertisements but will not prevent you from using the Clef Trainer practice tools.
This site uses Google AdSense to display advertisements. Google AdSense may serve personalised advertisements based on your browsing history and interests, and uses cookies and similar tracking technologies to do so.
Google's use of advertising cookies enables it and its partners to serve ads based on your prior visits to this site and other sites on the internet. You can learn more about how Google uses data from sites that use its services at policies.google.com/privacy.
If you are located in the European Union or the United Kingdom, Google will only serve personalised advertising where a lawful basis exists under applicable data protection law, including where you have given your consent. You can review and update your advertising preferences, or opt out of personalised advertising, at adssettings.google.com.
In addition to Google AdSense, this site uses the following third-party services, each of which has its own privacy policy:
We have no control over the data practices of these third parties and recommend reviewing their respective privacy policies.
If you are based in the European Union or the United Kingdom, you have the following rights under the General Data Protection Regulation (GDPR) and UK GDPR:
Because we do not collect personal data directly, most of these rights are most relevant in relation to data held by Google and other third-party services listed above. For data held by Google, please use adssettings.google.com or Google's privacy controls.
If you have any questions about this privacy policy or wish to exercise your data rights, please contact us at hello@cleftrainer.com.