Terms of Service

1. Acceptance of terms

By downloading, accessing, or using the Keys mobile application ("the App"), operated by Best Day Labs ("we", "us", or "our"), you agree to be bound by these Terms of Service. If you do not agree, please do not use the App.

2. Description of service

Keys is a music learning tool that imports audio from online videos and uses machine learning to transcribe the piano part as MIDI. Users can play along on a virtual keyboard, practice with adjustable speed and section looping, scan sheet music, and contribute transcriptions to a community catalog.

3. Subscription & payment

Keys requires an active subscription to access its features. Subscriptions are billed through Apple's App Store and are subject to Apple's terms regarding auto-renewal, cancellation, and refunds. Pricing and plan details are displayed in the App prior to purchase. You can manage or cancel your subscription at any time through your Apple ID account settings.

4. User-generated content

When you publish a transcription to the community catalog, you grant Best Day Labs a non-exclusive, worldwide, royalty-free license to host and display that transcription within the App. You retain ownership of your contributions and may request their removal at any time by contacting us.

5. Respecting source material

You agree to use Keys only to transcribe content you have the right to transcribe. Do not import videos that you do not own or that are not licensed for personal use. Best Day Labs is not responsible for content that users import, transcribe, or publish, and may remove user-submitted content that infringes on third-party rights.

6. Accuracy disclaimer

Piano transcription is performed by machine-learning models and is not guaranteed to be note-perfect. Keys is intended as a practice and learning aid, not as a definitive musical transcription. Sheet music scanning is similarly approximate. We make no warranty regarding the accuracy of any transcription.

7. Acceptable use

You agree to use Keys only for personal, non-commercial music learning purposes. You agree not to reverse-engineer the App, abuse the API, or use Keys in any way that could harm the service or other users.

8. Third-party content

The Keys catalog includes public-domain classical pieces sourced from the Mutopia Project under Creative Commons licenses (CC0, CC-BY, and CC-BY-SA). Engraver attribution and license details are listed in the App's Credits screen. Other catalog content is contributed by Keys users under the license described in Section 4.

9. Disclaimer of warranties

The App is provided on an "as is" and "as available" basis. Best Day Labs makes no warranties, expressed or implied, regarding the App's reliability, accuracy, or suitability for your specific needs.

10. Limitation of liability

To the maximum extent permitted by law, Best Day Labs shall not be liable for any indirect, incidental, special, consequential, or punitive damages arising out of or related to your use of the App.

11. Changes to terms

We reserve the right to modify or replace these Terms at any time. If a revision is material, we will try to provide at least 30 days' notice prior to any new terms taking effect. By continuing to use the App after revisions become effective, you agree to be bound by the revised terms.

12. Governing law

These Terms shall be governed and construed in accordance with the laws of the United States, without regard to its conflict of law provisions.

13. Contact

If you have any questions about these Terms, please contact us at support@bestdaylabs.com.