Privacy Policy
Last updated: March 2026
1. Overview
This policy explains what data we collect when you use FretCrunch, why we collect it, and how we protect it. We collect as little as possible and never sell your data.
2. What we collect
When you use FretCrunch, we collect anonymous usage analytics through PostHog (EU-hosted). This includes pages visited, features used, device type, browser, and country. If you accept cookies, we also record session replays to understand how the app is used and fix usability issues. Session replays may capture mouse movements, clicks, and scrolls but never passwords, payment details, or sensitive form inputs.
3. Cookies and storage
FretCrunch uses localStorage to save your preferences (language, theme, tuning settings). These are essential for the app to work and do not require consent. Analytics cookies from PostHog are only set if you explicitly accept them via the cookie banner. If you decline, no analytics cookies are set and no session data is collected.
4. Legal basis (GDPR)
Essential storage (preferences): Legitimate interest — necessary for the app to function. Analytics and session replays: Consent — only activated when you accept via the cookie banner. You can withdraw consent at any time by clearing your browser data or using the cookie settings.
5. Data processor
We use PostHog Inc. as our analytics processor. PostHog is configured to use EU-based servers (Frankfurt) and we have a Data Processing Agreement in place. PostHog's privacy policy is available at posthog.com/privacy.
6. Data retention
Analytics data is retained for 12 months. Session replays are retained for 30 days. Since all data is anonymous, it cannot be linked to individual users.
7. Your rights
If you are in the EU/EEA or UK, you have the right to withdraw your consent at any time by clearing your browser cookies or localStorage. Since FretCrunch does not require an account and analytics data is anonymous, we cannot identify or retrieve data linked to a specific individual.
8. Third-party services
FretCrunch uses Google Fonts for typography. Google may collect your IP address when fonts are loaded. No other third-party tracking services are used.
9. Children
FretCrunch is not directed at children under 16. We do not knowingly collect data from minors.
10. Changes
We may update this policy from time to time. Changes will be posted on this page with an updated date.
11. Contact
For privacy questions, a dedicated contact channel will be made available on this page in the future.
Terms of Use
Last updated: March 2026
1. Acceptance
By using FretCrunch, you agree to these terms. If you do not agree, please do not use the app.
2. Description of service
FretCrunch is a free, web-based guitar reference tool that provides chord diagrams, scale patterns, and related music theory information. The service is provided "as is" without warranties of any kind.
3. Use of the service
You may use FretCrunch for personal, educational, and professional purposes. You may not attempt to reverse-engineer, scrape, or automatically extract data from the service.
4. Intellectual property
The FretCrunch name, logo, design, and code are proprietary. Music theory data (scales, chords, intervals) is factual information and is not subject to copyright.
5. User content
FretCrunch does not collect user-generated content. Preferences stored locally on your device belong to you.
6. Availability
FretCrunch is provided free of charge and may be modified, suspended, or discontinued at any time without notice.
7. Limitation of liability
FretCrunch is provided for reference purposes only. We are not liable for any damages arising from use of the service, including inaccuracies in chord diagrams, scale patterns, or music theory information.
8. Links to third parties
FretCrunch may contain links to external websites. We are not responsible for the content or privacy practices of third-party sites.
9. Governing law
These terms are governed by the laws of Spain. Any disputes will be resolved in the courts of Spain.
10. Changes
We may update these terms from time to time. Continued use of FretCrunch after changes constitutes acceptance of the new terms.
11. Contact
For questions about these terms, a dedicated contact channel will be made available on this page in the future.