Master music theory with Caelus Music Academy — your personal music education companion. LEARN AT YOUR PACE • 10 structured courses from basics to advanced theory • 60 interactive lessons with clear explanations • Progress tracking across all courses TRAIN YOUR EAR • Interval recognition (ascending, descending, harmonic) • Chord quality identification • Scale type recognition • Real audio playback — hear actual tones, not just text AI MUSIC TUTOR • Ask any music theory question • Get personalized explanations • 100% on-device AI — your conversations stay private INTERACTIVE TOOLS • Circle of Fifths reference • Scale & chord explorer • Key signature guide • Tempo & rhythm tools UNLOCK EVERYTHING • Free to try with daily limits • One-time $1.99 purchase for lifetime access • No subscriptions, no ads, no hidden fees Whether you're a beginner learning your first scale or an experienced musician brushing up on theory, Caelus Music Academy makes music education accessible, private, and affordable.