Contrapunctus vs note-noodle

Contrapunctus is a free web platform for music theory, composition, and counterpoint study. Its real-time editor shows Roman-numeral and chord analysis while users write, and identifies part-writing errors and non-chord tones. Compositions can use multiple voices, major, minor, or modal contexts, and sampled-instrument playback. The platform includes an interactive edition of Fux’s Gradus ad Parnassum, with species-counterpoint lessons, an AI tutor, and English and Latin text. Community members can create and solve exercises, share solutions, vote, and earn points toward a 15-rank ladder. Educators can create classes, assign lessons, review submissions, and track scores and class averages in a gradebook. Accounts use email or Google, with projects and activity synchronized across devices. Plain and compressed MusicXML can be imported, but MusicXML or MIDI export is not yet shipped. Some imported details may be simplified or dropped, and tutor free-form questions are limited to 25 per account per rolling hour.

note-noodle provides interactive music theory practice for fretboard work, staff notation, ear training, rhythm, and play-along, alongside a guided curriculum. Play Along grades pitch and timing while a user plays through a microphone, MIDI keyboard, or screen. It accepts MIDI and Guitar Pro files up to 5 MB; free accounts can upload three per month. The curriculum has 35 lessons, quizzes, unit exams, spaced repetition, and seven learning paths. Ear training spans eight categories and four difficulty tiers, with answers by ear, MIDI, or microphone. Four digital instruments send per-note bend, slide, and pressure across up to 15 member channels; hearing per-note bend requires an MPE host such as Live 11. A MIDI Bridge connects those instruments to a desktop DAW over the local network. Free access includes 10 ear-training sessions per day and the first four lessons without an account. Premium costs €7 a month. The service runs on Android, Linux, macOS, web, and Windows.