What musictheory.net does

musictheory.net is a privately held LLC (musictheory.net, LLC) founded in 2000 and based in Cupertino, California, that operates a free, ad-free web platform for music theory education alongside two paid iOS applications. The web platform delivers 39 lessons, 24+ interactive exercises (staff identification/construction, keyboard, fretboard, ear training), and six calculators (accidentals, intervals, scales, chords, analysis symbols, twelve-tone matrices), all rendered client-side using HTML5, WebAssembly, and the Web Audio API. The proprietary architecture includes a cryptographically-signed Progress Report system in which verification codes are generated locally and never transmitted or stored on servers, and an Exercise Customizer that produces permanent, never-expiring URLs for teacher-assigned homework. Lesson text and still images are released under Creative Commons Attribution 4.0, while the apps and interactive interfaces are proprietary.

The company monetizes exclusively through two iOS apps distributed solely via Apple's App Store: Tenuto ($4.99, 24 exercises plus six calculators with offline functionality) and Theory Lessons ($2.99, 39 animated lessons). There are no subscriptions, ads, or alternative distribution channels; the free website explicitly encourages users to purchase the apps to support the site. Go-to-market is product-led and organic, relying on App Store discoverability (ranked #6 and #8 in the Music category with 4.7/5 and 4.4/5 ratings respectively), educator referrals, and iframe embedding of free exercises on third-party sites.

The customer base spans music teachers and their students (primary segment), self-directed music learners, and musicians seeking skill development across instruments. The company maintains a strict privacy posture: COPPA-compliant, no third-party analytics, anonymous beacon-based usage estimation, and hosting on Akamai infrastructure with email handled by Fastmail. With 1-10 employees and no external funding disclosed, musictheory.net has operated as a bootstrapped, founder-led business for 25 years, with recent product activity (Tenuto v5.1 in April 2025, v5.0 in May 2025; Theory Lessons v3.2.1 in April 2025) indicating ongoing maintenance and incremental enhancement rather than aggressive expansion.

Name

musictheory.net

Legal name

musictheory.net, LLC

Website

https://musictheory.net

Company type

Private

Founded year

2000

Operating status

Operating

Headcount range

1–10 employees

Short description

musictheory.net is a bootstrapped Cupertino-based LLC operating a free, ad-free web platform and two paid iOS apps (Tenuto, Theory Lessons) delivering music theory education to teachers, students, and self-directed learners via HTML5/WebAssembly technology and exclusive Apple App Store distribution.

Ownership category

akta.pro rank

Product category

Music Education Software

NAICS

Fine Arts Schools (61161), Educational Support Services (61171), All Other Schools and Instruction (61169)

SIC

Services-Prepackaged Software (7372), Services-Educational Services (8200)

akta.pro primary industry

Music Education & Practice Software (Ear training, tutors, metronome tools) (MPAIAIAJ)

akta.pro secondary industries

Online / Virtual Music Instruction & Platforms (EDAMANAI), Music Theory, Ear Training & Musicianship (EDAMANAF), Music Notation & Scoring Software (MPAIAIAE)

Keywords

• Music theory education
• Ear training exercises
• Music theory lessons
• Music education apps
• Music theory tools

Headquarters

HQ city

Cupertino

HQ country

United States

HQ region

North America

Markets served

GTM type

B2C

Offering type

Software

Cost components

Technology or R&D, Infrastructure, Others, Operations

Revenue model

1. Tenuto iOS App: Enhanced version of exercises and calculators for iPhone and iPad. Features 24 highly-customizable exercises and six musical calculators including accidental, interval, scale, chord, analysis, and matrix calculators. Requires no internet access for core functionality.
2. Theory Lessons iOS App: Enhanced version of animated lessons for iPhone and iPad. Features 39 animated music theory lessons covering topics from basic staff notation through advanced analysis. Works offline once downloaded.

Pricing tiers

Go-to-market motion2 records

Distribution channels2 records

Marketing channels4 records

Core offering

musictheory.net provides music theory education through a free, ad-free web platform featuring 39 animated lessons, 24+ interactive exercises, and six musical calculators, supported by two paid iOS apps: Tenuto (24 exercises and 6 calculators, $4.99) and Theory Lessons (39 animated lessons, $2.99). The platform is designed for both self-directed learners and music educators who assign homework through a customizable exercise system with cryptographically signed progress reports.

Product overview

musictheory.net provides music theory education through a tiered model combining free web-based content with paid iOS apps. The core offering includes the free web platform (musictheory.net) featuring lessons, exercises, and tools, supported by two premium iOS apps: Tenuto (24 exercises and 6 calculators, $4.99) and Theory Lessons (39 animated lessons, $2.99). Both apps work offline and are optimized for iPhone and iPad. The web lessons use Creative Commons Attribution 4.0 licensing while the apps and their interfaces are proprietary.

Differentiator

Problem solved

Functional benefit

Brands

• Tenuto: An enhanced version of the exercises and calculators for iPhone and iPad, featuring 24 exercises and six calculators with a touch interface optimized for all screen sizes. Requires no internet access.
• Theory Lessons
• Classic Edition

Products and services

• Tenuto iOS App Enhanced offline version of music theory exercises and calculators for iPhone and iPad. Features 24 highly-customizable exercises (staff identification/construction, keyboard, fretboard, ear training) and 6 musical calculators (accidentals, intervals, scales, chords, analysis symbols, twelve-tone matrices). Touch-optimized interface requiring no internet access.
• Theory Lessons iOS App Enhanced offline version of animated music theory lessons for iPhone and iPad. Contains 39 comprehensive lessons covering fundamentals through advanced theory, including staff notation, rhythm, scales, intervals, chords, chord progressions, Neapolitan chords, and serialism. Works offline once downloaded.
• Web Exercises Free online music theory exercises covering staff identification and construction, keyboard identification, fretboard identification, and ear training. Includes 24+ exercise types available without registration, supported by the Exercise Customizer for teachers to tailor assignments.
• Web Tools (Calculators) Free online musical calculators for accidentals, intervals, scales, chords, analysis symbols, and twelve-tone matrices, plus a tempo tapper, staff paper generator, and pop-up piano utility.
• Web Lessons Free online music theory lessons covering basics, rhythm and meter, scales and key signatures, intervals, chords, diatonic chords, chord progressions, and Neapolitan chords. Text and images available under Creative Commons Attribution 4.0 for redistribution with attribution.

Quantifiable outcome

• 25 years of continuous operation since 2000
• +3 more outcomes

Segments3 records

Ideal customer profiles2 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Partnerships

Two partnerships are on record, tiered core.

• ApplecoreChannel Partner/ Reseller/ DistributorApple distributes musictheory.net's iOS applications through its App Store. Both Tenuto and Theory Lessons are available for iPhone, iPad, and iPod touch. The company uses Apple's App Store as its exclusive distribution channel for mobile applications. Apps support Family Sharing for up to six family members.
• AkamaicoreTechnology or IntegrationAkamai provides server hosting infrastructure for musictheory.net. The company uses Akamai's content delivery network to serve its website and application content to users globally.

Scale indicators6 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Yousician: Subscription-based music education app offering instrument lessons and theory exercises on iOS and Android; directly competes for the same self-directed music learner persona as musictheory.net.
• Simply Piano (JoyTunes): Mobile music education app with subscription pricing covering piano, guitar, and bass; competes head-to-head on iOS music category rankings and target learner segments.
• Fender Play: Subscription-based music instruction platform from Fender offering structured lessons and theory; comparable to musictheory.net's premium iOS offering but broader in scope (less theory-specific).
• EarMaster: Ear training and music theory software sold as desktop/iOS apps with customizable exercises and teacher tools; directly overlaps with Tenuto's exercise customizer and ear training functionality.
• Hooktheory: Web-based music theory education platform focused on chord progressions, Roman numeral analysis, and songwriting; targets the same intermediate-to-advanced theory learner segment.
• Musicca: Free web-based music theory education site with lessons, exercises, and calculators; mirrors musictheory.net's free web platform model and theory curriculum approach.
• Teoría: Long-running web-based music theory tutorials and ear training exercises; historical peer with similar free-content / single-operator business model.

Emerging players

• Flat.io: Online music notation and composition platform with collaboration features; adjacent to musictheory.net's calculator and notation tools but oriented toward creation rather than theory instruction.
• MuseScore: Open-source music notation software with a large community-contributed library; adjacent tool for music theory learners, especially those exploring notation and score analysis.

Broad incumbents

• SmartMusic: Established music education software used widely in schools with assessment and accompaniment features; broader incumbent competing for the same teacher-driven K-12 and studio workflows.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about musictheory.net