Ear Trainer Master — the ear training and music theory app with a guitar fretboard, piano keyboard, and 100+ structured lessons. Train intervals, chords, and chord progressions with visual aids no other app offers. GUITAR EAR TRAINING • See chord shapes on a real fretboard while you train — open voicings, barre chords, and a voicing style toggle • Guitar chord identification with visual feedback on every answer • Switch between acoustic guitar, electric guitar, classical guitar, and bass • The only ear training app that shows you the fretboard as you learn PIANO EAR TRAINING • Watch piano keys light up as intervals and chords play • Interval recognition and chord identification with keyboard visualization • Tap individual keys to compare notes and build your inner ear • Expand to full-screen piano for detailed analysis 100+ EAR TRAINING LESSONS • Ascending Intervals — 24 lessons from pitch recognition to compound intervals across all 12 keys • Descending Intervals — 18 lessons with song associations, mixed directions, and random tonic training • Chord Identification — 31 lessons: triads, suspended chords, inversions, seventh chords, and extended jazz chords (9ths, 11ths, 13ths) • Cadences — 11 lessons on authentic, plagal, half, and deceptive cadences • Functional Harmony — 15 lessons: tonic/predominant/dominant functions, pop loops, circle of fifths, and turnarounds • Applied Dominants — 8 lessons on secondary dominants and tonicization • More domains coming soon LEARN MUSIC THEORY BEFORE EACH QUIZ • Concept intro lessons explain what to listen for and why it matters • Song anchors help you remember interval sounds (Happy Birthday, Jaws, Star Wars) • Core concepts break down chord quality, voice leading, and harmonic function • Prerequisites guide you through a structured learning path PRACTICE IN ANY KEY • Tonal center selector — choose C, D, E, F, G, A, or B as your practice key • Random tonic mode for advanced ear training across all keys • Moving tonic mode for real-world modulation practice • Customizable playback: melodic, harmonic, block, or arpeggiated INTELLIGENT LEARNING SYSTEM • Two modes: Free Mode for open exploration or Tutor Mode with 80% mastery to advance • Multiple quiz formats: true/false recognition, matching, and identification • Instant feedback with correct answer display • Progress tracking with accuracy statistics and streaks • Auto-advance with configurable timing PROFESSIONAL AUDIO • High-quality MIDI synthesis with professional SoundFont technology • Adjustable tempo, volume, and sequence speed • Works offline — practice ear training anytime, anywhere AVAILABLE IN 16 LANGUAGES • English, Spanish, French, German, Italian, Portuguese, Dutch, Japanese, Chinese, Russian, Arabic, Hindi, Bengali, Urdu, Turkish, Indonesian WHO IS THIS FOR • Guitar players who want to recognize chords by ear • Music students preparing for ABRSM, RCM, or university auditions • Jazz musicians learning functional harmony, extended chords, and chord substitutions • Singers and vocalists building interval recognition and sight-singing skills • Producers and composers developing harmonic awareness • Beginners starting their first ear training journey • Anyone who wants to understand music more deeply FLEXIBLE & AFFORDABLE • Try free lessons in every domain before upgrading • Unlock all 100+ lessons with PRO — one-time purchase, no subscription • Family Sharing support on iOS Download Ear Trainer Master and start training your musical ear today.