KeyFu
Join the beta

Closed beta · 500 seats

Your AI piano coach.Exercises made for your music.

Tell your coach what you want to learn. KeyFu generates custom exercises around your ideas, adapts to your skill in real-time, and tracks your progress — no sheet music ever.

500 seats. We send one confirmation email — your seat is claimed once you confirm it.

See a session

You'll need an iPhone or iPad and a keyboard that connects by USB — most digital pianos and MIDI keyboards do.

KeyFu showing a two-chord progression as 1 (C major) moving to 4 (F major)

You can hear it. Your hands can't play it yet.

Train like you'd drill on a wooden dummy: the same movement, thousands of times, until it's yours. KeyFu builds those repetitions out of the music you actually care about, and gets out of the way.

Sit down and know what to practise

Sessions fit the time you have — five minutes between renders, or an hour on one song.

01

It adapts while you play

timing · accuracy · consistency · freshness

KeyFu reads how you actually played — four things, tracked separately — and moves the next exercise to match. When you tire, the session eases off instead of pushing through.

02

Chords by number, not by page

1–5–6m–4 · in C that's C · G · Am · F

Every progression gets a number as well as a name. Learn 1–5–6m–4 in C and it's the same four moves in any other key — the numbers stay put while the chord names change.

03

A coach that talks back

Lou · Moe · Nico

Tell one what you're working on — a song you're writing, a bassline you can't play yet — and it builds the plan with you, then gives live feedback from your MIDI keyboard while you play.

This coach can prove it

Every screen below is the real app.

Skill profile

Radial skill petal chartSix skills — timing, chords, harmony, ear training, hand-sync and left hand. Timing, chords, harmony and left hand show measured levels. Ear training and hand-sync are still under fog and show a question mark until playing proves them.??TimingChordsHarmonyEar trainingHand-syncLeft hand
Skills you have not played yet stay under fog — the chart never guesses a level it has not measured.

Goal progress

Play the chorus of my song hands together at 92 BPM

3 of 5 steps toward this goal

Your left hand is steady now. Let's give the right hand something harder.

Moe
  1. Capture
    01Set a goal
  2. Capture
    02Coach builds the plan
  3. Capture
    03Play it
  4. Capture
    04Live feedback
  5. Capture
    05Progress

Pricing

KeyFu is free during the closed beta. Fair pricing at launch — core practice stays free.

Your goals are free for everyone, forever. Set them, change them, and work through every step toward them without a subscription.

Join the closed beta

500 seats, invited by email in the order people confirm. Bring a keyboard and something you've been meaning to play.

500 seats. We send one confirmation email — your seat is claimed once you confirm it.