| Price from | $4.58/mo | $7.99/mo |
| Free plan | Yes | — |
| Free trial | — | — |
| Open source | — | — |
| Web | Yes | Yes |
| macOS | Yes | — |
| iOS | Yes | Yes |
| Android | Yes | Yes |
| Plans published | 4 | 1 |
| Spec score · Music Learning Apps | 9.0 (#4) | 7.7 (#26) |
| Audience | Musopen says its mission is to increase access to music education with free recordings, sheet music, apps, and educational materials. | The maker says the course is intended for complete beginners as well as learners with prior note-reading and theory experience. |
| Headquarters | San Francisco, California, United States | Pittsburgh, Pennsylvania, United States |
| Privacy and security | Musopen’s privacy policy says it uses commercially reasonable measures to protect personal information but cannot guarantee internet transmissions are completely secure. | The privacy policy says personal data is stored on the user's device and Noteful's secure cloud servers, and encrypted in transit. |
| Support | Musopen directs people with questions or bug reports to its contact page. | The maker lists [email protected] as its contact email. |