Contrapunctus

At a glance

• Editor score
  6.6 / 10
• Pricing
  Free
• Best for
  Advanced counterpoint and part-writing practice
• Paid from
  Free
• Interactive exercises
  Yes
• Facts checked
  20 Sep 2026

• Where it wins

  • Real-time Roman-numeral, chord, and non-chord-tone analysis
  • Fux-based counterpoint exercises with community practice
  • Classroom assignments, grading, and progress tracking

• Where it doesn't

  • Web-only access limits platform coverage
  • Beta access may not suit users seeking a settled release
  • Its focus is narrower than broad composition software

Our verdict on Contrapunctus

Contrapunctus is a browser-based music theory platform for students, educators, composers, and theory enthusiasts. Its notation editor combines real-time Roman-numeral and chord analysis with part-writing error detection, non-chord-tone classification, key and scale awareness, multi-voice composition, and playback with sampled instruments. The product is particularly suited to learners working on harmony, counterpoint, and part writing, as well as educators who need structured assignments and progress tracking.

The standout feature is its depth for counterpoint and analysis practice. Contrapunctus includes interactive exercises based on Fux’s Gradus ad Parnassum, alongside tools for creating and solving community exercises. Multi-voice notation supports composition and analysis in the same browser workspace, while error detection can identify part-writing issues and classify non-chord tones. MusicXML import and MIDI output extend its usefulness for users moving notation into or out of the platform. These features make it a stronger fit for advanced theory work than for users seeking a general-purpose music production environment.

For teaching, Contrapunctus supports classes, assignment authoring, grading, and progress tracking. According to the published beta access terms, access is free and requires no credit card. The platform is web-only, so it fits users comfortable working in a browser but not those looking for a desktop application. Its beta status also makes it better suited to students, educators, composers, and theory enthusiasts who value specialized exercises and analysis over a broader software ecosystem. Choose Contrapunctus for focused counterpoint, part-writing, and classroom theory practice; choose an alternative if platform breadth or production-oriented tooling matters more.

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Contrapunctus pricing

All 1 Contrapunctus plans and prices →

Contrapunctus fact sheet

Contrapunctus integrations

Contrapunctus lists 2 integrations on its own site.

• MIDI output
• MusicXML import

Alternatives to Contrapunctus

• MusitionA comprehensive theory classroom tool with deep exercises, assessment, and LMS support.9.4
• HHarmoniaA feature-rich free option for structured harmony study and classroom assessment.9.2
• note-noodleA broad, low-cost practice app covering theory, ear training, notation, rhythm, and play-alongs.9.0

See all Contrapunctus alternatives →

Featured on iTechGuides

Contrapunctus is listed in our Music Theory Software directory. Add the badge to your site — it links back to this page.

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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

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Last updated 7 Oct 2026 · How we research and update