Terms of use

Effective 22 October 2026.

Educational use

Notation Lab provides music practice exercises. Results and mastery percentages are app feedback and do not certify professional ability. Browser timing, device latency and input configuration can affect exercise feedback.

Your work

You retain rights in original compositions you enter. The app saves work in your browser. Keep exported backups for anything you need to retain; browser data may be cleared or become unavailable.

Availability

The app may change as it is improved. No uninterrupted availability or particular learning outcome is promised. These terms do not exclude rights that applicable law does not permit to be excluded.

Third-party components

VexFlow is supplied under its included MIT licence. Names of other products describe compatibility and do not imply endorsement.