Contrapunctus

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Freedom report

One barScore 5.2

Free tierA free tier is on its own pricing page
Open codeNo open-source code on record
Runs widely1 of 6 device platforms
DocumentedThinly documented

Contrapunctus is ranked #20 of 27 in music theory software on Freedom251. It runs on Web. There is a free plan.

Contrapunctus plans and pricing

All plans

Beta access Free Free during beta · no credit card contrapunctus.app · 9 Oct 2026

Compared on music theory software

Interactive exercises: Yes
Notation tools: advanced
Harmony tools: Yes
MIDI support: Yes
Supported platforms: Web
Progress tracking: Yes

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The record

Product: Contrapunctus is a music theory platform with a real-time editor, community exercises, and an interactive edition of Fux’s Gradus ad Parnassum.
Analysis: The editor displays Roman numeral and chord analysis while users write and detects part-writing errors and non-chord tones.
Composition: Users can compose for multiple voices, set major, minor, or modal contexts, and play compositions with sampled instruments.
Counterpoint tutor: Gradus provides an interactive species-counterpoint curriculum with an AI tutor and English and Latin text.
Community: Users can create and solve exercises, share solutions, vote, and earn points toward a 15-rank ladder.
Classroom: Educators can create classes, assign lessons, review submissions, and track scores and class averages in a gradebook.
Account access: Accounts can be created with email or Google, and user profiles sync projects and activity across devices.
Import limit: The editor imports plain and compressed MusicXML, but export to MusicXML or MIDI is listed as not yet shipped.
Import compatibility: Tuplets, mid-piece tempo, key, or time changes, ornaments, and explicit voice tagging are not fully modeled on MusicXML import and may be dropped or simplified.
AI tutor limit: Free-form questions to the Gradus tutor are limited to 25 per account per rolling hour.
Privacy setting: Google Analytics is on by default outside the EU and UK, and users can turn it off in settings; EU and UK visitors receive a consent banner.
Support: Users can submit bug reports through a button available at the bottom of every page and feature requests through the user menu.
Price from: Free

Where it ranks on Freedom251

Best Music Theory Software in 2026#20 of 27

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Sources

contrapunctus.app/help· checked 9 Oct 2026
contrapunctus.app· checked 9 Oct 2026