Real-time chord recognition for Bluetooth and USB MIDI keyboards. Intelligent harmonic analysis, not just note matching. Stop guessing what chord you're playing. WhatChord connects to your Bluetooth or USB MIDI keyboard and identifies chords instantly, giving you real-time feedback to learn faster, compose smarter, and understand harmony more deeply. Play. Learn. Discover. Unlike simple note matchers, WhatChord uses musically informed analysis to determine the most plausible chord interpretation. It considers harmonic context, inversions, and conventional naming practices so chord names appear the way musicians expect to see them. Features - Real-time chord recognition Chord names update immediately as you play. - Musically informed analysis Understands inversions, extensions, slash chords, upper structures, and altered tones. - Alternative interpretations When multiple chord names make musical sense, you'll see all valid interpretations. - Context-aware spelling Uses proper enharmonic notation based on key signature and chord function. - Customizable notation Choose the chord symbol style you prefer. - MIDI compatibility Works with standard Bluetooth MIDI or USB MIDI keyboards and controllers. Comprehensive Recognition WhatChord identifies everything from beginner piano chords to advanced jazz harmonies. Whether you're practicing theory exercises, learning progressions, exploring altered dominants, or voicing polychords, the app recognizes and names what you play with accuracy and musical intent. Privacy WhatChord is completely free, contains no ads, and collects no personal data. All analysis happens locally on your device. Get Started Connect your Bluetooth or USB MIDI keyboard and let WhatChord become your real-time harmony assistant. Finally know exactly what you're hearing.
