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Learn chords and scales on piano keys and guitar fretboard, with ear training
Music Theory Lab is an ear training and music theory app for guitarists, pianists, and anyone who plays by ear and wants to know why a chord sounds the way it does. Short daily drills show exactly which intervals and chords you can and can't recognize yet, and 56 illustrated lessons explain the theory behind them. THE DAILY PRACTICE LOOP Open the app and a drill is already sounding. Pick one of four answers, hear the correct sound replayed, and move on. Ten drills, about ninety seconds. At the end: today's accuracy, your day streak, one interval or chord you already hear clearly, and one honest blind spot, including what you keep calling it instead. What you are shaky on keeps coming back. EAR TRAINING • Interval and chord recognition drills generated by a music theory engine, not a fixed quiz bank • Harmonic and melodic (ascending and descending) playback • Instant reveal with the correct sound replayed • Day streak, today's accuracy and a session summary with your strength and weak spot • Optional practice reminders at a time you pick, off by default LEARN THE THEORY • 56 lessons across 5 worlds: Foundations, Scales & Tonality, Intervals & Ear Training, Chords & Harmony, and Rhythm & Meter • Bite-sized pages with explanations, diagrams, tips and short quizzes that explain every answer • Lessons open straight into the instrument lab with the notes just taught THE LAB: BUILD AND HEAR ANY CHORD • A touch keyboard and a touch fretboard sharing one selection: see the guitar shape and the piano notes at once • Live chord and interval detection: play any combination of notes and the app names it • A waveform view and one-tap arpeggiate • AI Explain: a plain-language, note-by-note breakdown of why your selection sounds the way it does (Pro) • The Lab is free for everyone Also built in: a 10-language interface, light, dark and system theme, and guest mode from the first launch with no login wall. WHAT'S FREE 15 ear training drills a day, the day streak and accuracy tiles, the session summary, 16 full lessons (the first lessons of every world), and the entire Lab for unlimited chord building on keyboard and fretboard. WHAT PRO ADDS • Unlimited daily drills • All 56 lessons across all 5 worlds • AI Explain in the Lab • Practice progress backed up to your account • No ads Music Theory Lab shows ads to keep the free tier free; Pro removes them. Pro is a Monthly or Annual auto-renewing subscription, charged to your Google Play account and renewed automatically unless cancelled at least 24 hours before the period ends. Manage or cancel anytime in your Google Play subscriptions. Privacy Policy https://www.coddykit.com/terms/privacy-policy