Free: $0/forever with 5 practice analyses per day. Plus: $9.99/month with 50 practice analyses per day. Pro: $19.99/month with 200 practice analyses per day.
Key features
Chord progression detection
Key identification using Krumhansl-Schmuckler profiles
Tempo/BPM detection from onset envelope
Interactive timeline of detected chords
Roman numeral chord notation
Export chord list as text or file
Supports MP3, WAV, M4A, AIFF, FLAC and OGG files
Analyzes timing, note accuracy, note duration, dynamics, and early releases
Hand-specific performance feedback
Interactive score and keyboard
Practice history and progress tracking
AI spoken coaching
Personalized generated lessons
Works offline after initial setup
Native app for macOS, Linux, and iPad
Direct MIDI keyboard connection
What makes it different
Runs entirely in browser with no uploads or server processing
Completely free with no daily limits or account required
Uses transparent signal processing instead of hidden machine learning
Shows actual detection results so you can see where it guesses
Prioritizes the most important issue to work on next instead of overwhelming with all mistakes
One focused recommendation per practice attempt
Adapts to your performance rather than generic feedback
Built specifically for MIDI keyboards with note-level analysis