Euterpe vs Duende

Euterpe is a chord and scale training app for pianists and musicians of all levels. Play on a beautifully designed minimalist 3-octaves keyboard, identify chords in real time, and sharpen your theory with timed quiz sessions. IDENTIFY MODE Play any note or chord and see it identified instantly on the LCD display. Works with touch and MIDI keyboards — plug in via USB or pair via Bluetooth and start playing immediately. CHORD TRAINING A chord appears on the display. Find the notes, press them simultaneously, and submit. Get instant feedback with colour-coded keys showing exactly what you got right and wrong. Practice inversions, shell voicings, and rootless voicings used by jazz pianists. SCALE TRAINING Practice all the essential scales — major, minor, modes, pentatonics, blues and more. The app shows which notes you hit and which you missed, with interval labels to reinforce your theory. TIMED SESSIONS Push yourself with 1, 3 or 5-minute scored sessions. Track your progress over time with a session history graph showing your improvement across multiple sessions. REFERENCE GUIDE Two-octave piano diagrams for every chord and scale, transposable to any root key. Supports both letter notation and solfège. CHOOSE YOUR SETTINGS Note names (Solfège or letters), invert keyboard, sustain and more. FREE TO TRY The four basic triads and major/minor scales are free. Unlock all 25 chord types, 14 scale types, inversions and voicings with a single one-time purchase.

Practice more. Guess less. Duende turns the time you spend with your instrument into something you can see. Start a session, play, and it does the rest. KNOW WHAT YOU REALLY PRACTISED The timer runs on the clock, not on whether the app happens to be awake. Lock your phone, set it on the stand, walk away, and every second still counts. Turn the microphone on and Duende separates playing from silence, so you find out how much of that "hour" actually made a sound. It judges against your own room rather than a fixed level, so it works the same in a quiet flat and a shared house, and it keeps measuring while the phone is locked. The audio is read on your device, never uploaded, and deleted the moment the session ends. BUILD THE HABIT A practice streak for showing up, and an activity heatmap covering the last three months. A reminder at a time you choose, if you want one. KEEP THE DETAILS Tag a session by focus: technique, repertoire, sight reading, improvisation and five more. Write quick notes mid-session without stopping the clock. Add a photo of the passage you are working on. ANY INSTRUMENT Fifty-plus instruments across strings, keys, wind, percussion and voice, from guitar and piano to sitar, tabla, bansuri and harmonium. Track as many as you play. SHARE IT, OR DON'T Generate a session card for Instagram or WhatsApp. Connect Strava and your practice lands in the same feed as your runs and rides. Both entirely optional, and the app works fully without either. Your practice history is private to your account. Nothing is deleted and nothing is sold. You can remove any session, or your whole account, from inside the app at any time.