Exercise library
Find an exercise, hear it, play it in any key
KeyFu is a piano practice app for iPhone and iPad. Its exercise library holds every exercise and routine in the app, and you can play anything you find there.
Browsing, searching and playing are free for everyone.
Practice with purpose. Play with freedom.
What adapts, and what you choose
KeyFu adapts to you
- Ready for you: exercises that could fit next, from what you have played.
- An exercise opens in the key you are in today.
- One that reaches past your keyboard is marked, not hidden.
- One that is too much at its usual tempo starts at its slowest, and the coach says why.
You choose
- Search in music words or plain words.
- Filter by how demanding, hands, length or For you.
- Hear any exercise first. Nothing is scored.
- Try it with another home note and kind of key.
- With Pro, add it to one of your routines.
Search
Search in the words you already use
music words · plain words · lh · rh · chord numbers as digits
Type what you are looking for and get one list of every exercise and routine that matches, best matches first.
Music words and plain words both work: arpeggio finds what broken finds, and inversion what flipped finds.
It also knows lh and rh for the hands, and chord numbers typed as digits, the way exercises name chords.
Filter narrows any list by how demanding, hands, length or For you, and names the filters in words while they are on.
Hints
Hints from what you played, never a gate
A small word under an exercise hints whether it could fit next: ready for you, started or builds on others.
The hint comes from two things only: the order the exercises build on each other, and what you have played.
It says nothing about how good you are, and it never stops you playing anything.
A skill’s page lists its exercises easiest first, under Ready for you, Coming up and Further along. Any of them opens now.
An exercise’s page
Hear it first, then try it in another key
Each exercise has its own page, and it opens in the key you are in today.
Its page says what it is, what it lets you do, where you’ll use it and how to play it. A colored music word opens a bubble that explains it.
The ear button plays it once through first, at its usual tempo and in the key on the page. Nothing is scored.
Pick another home note (Tone) and kind of key (Type) before you play. It is only a try and changes nothing else.
To stay in that key for the day, tap Make …; the coach first says what it would mean for today’s plan.
Your hands, your keyboard
It starts where your hands are today
Practice now opens the exercise in the key you picked.
If it is too much at its usual tempo, it starts at its slowest and the coach says why. If even that is too much, the button offers Play freely.
An exercise that reaches past your keyboard is dimmed and marked Needs more keys. Your keyboard’s size, from 25 to 88 keys, is set in Settings.
Make a harder version of an exercise your own, and its page lists it under Stages you own, counting the keys you earned it in.
It is a record, not a to-do list: it never names what comes next.
Free and Pro
Browse and play free. Add to routines with Pro.
Browsing, searching, playing any exercise or routine, and saving a copy of a ready-made routine stay open to everyone.
Add to routine… puts an exercise at the end of one of your routines, in that routine’s key.
Like building your own routines, it is part of KeyFu Pro.
Pricing
KeyFu is free during the beta. Fair pricing at launch — core practice stays free.
Free for everyone: the exercise library and its ready-made routines, any exercise you pick, and one session a week planned for you. Setting your own goals stays free forever.
KeyFu Pro plans the right session every time you sit down and lets you build your own routines. Everyone on the beta list gets a discounted first year.
Common questions
Is the KeyFu exercise library free?
Yes, browsing, searching, hearing and playing any exercise or routine are open to everyone. Adding exercises to your own routines is part of KeyFu Pro.
Do I need to know music words to search?
No, plain words work as well as music words: broken finds what arpeggio finds. Words you’ll meet, a glossary in the library, explains the music words.
Can I play an exercise the app hasn’t suggested?
Yes, you can play any exercise: the hints never stop you. Only one that reaches past your keyboard, or is too much even at its slowest, has to wait.
Can I play an exercise in a different key?
Yes, pick another home note and kind of key on the exercise’s page. If it doesn’t fit your keyboard there, the page says so, and most other keys will.
What does “Needs more keys” mean?
“Needs more keys” means the exercise reaches further than the keyboard size set in Settings. If your keyboard is bigger, change the size there and it opens up.
Join the beta
Invitations go out in small waves. KeyFu is free during the beta.
We send one confirmation email, then invitations in small waves. Without the tick we use your address only for the beta and the launch (privacy).
You need an iPhone or iPad and a keyboard that connects by USB or Bluetooth MIDI — most digital pianos do. What one session looks like.