Press keys. See the chord.

Keyriff names the chord you’re playing, remembers the ones you like, and turns them into a practice sheet you can play back.

Open the app Read the questions

FreeNo accountNothing to installNothing uploaded

Cmaj7C · E · G · B

Click a few keys. Click a lit one to release it.

Then it keeps what you found

The keyboard above is the quick version. The app adds everything you’d want once you’ve found a chord worth keeping.

The Keyriff app showing a sheet called Autumn Sketch. A chord library tray across the top holds six chords renamed “the sad one” (Am), “the lift” (F), “home” (C), “the turn” (G), “the pretty one” (Cmaj7) and Em. Under it a “Goes well next” row suggests C, F, G and Am labelled with the numerals I, IV, V and vi. Below that a Verse section holds four of those chords as cards, above a three-octave piano keyboard. — **Fig. 1**Chords renamed to whatever you’ll actually remember, kept in a library across the top, with the app suggesting what usually comes next.

Find a chord
Press three or more keys with the mouse, a touchscreen, or your computer keyboard. The name appears as you play.
Save it
Save the ones you want to keep. You can rename them too, so “the sad one” works as well as Cmaj7.
Practice
Drag saved chords into sections, set the tempo and the repeats, then press play and follow along on the keyboard.

What is in it

This is the whole product as it stands today. Nothing on the list is held back for a bigger version, and nothing on it is going away.

Chord detection, live

Hold three or more notes and the name appears. It covers majors, minors, sevenths, suspensions and inversions, and shows the alternative readings when there are any.

Suggestions for what comes next

Hold a chord and a “Goes well next” row offers the ones that usually follow it, drawn from the key your sheet is in and labelled with the numeral each one plays. Tap one to put it under your hands.

Your own library

Save a chord and rename it to whatever you'll recognise later. You can reorder the library, reuse a chord anywhere, and drag it straight into a sheet.

Practice sheets that play

Arrange chords into named sections and play the whole thing back with sampled piano. The keys light up in time with it.

Tempo where you need it

There's one tempo for the sheet, an override per section, and another for the single chord that keeps tripping you up.

Play from QWERTY

An octave sits under your fingers, A to K for the white keys and the row above for the black ones, so you can find chords without reaching for the mouse.

PDF you can print

Export a sheet with a small keyboard diagram for every chord. It's yours to keep, with no account attached to it.

One file holds everything

Back up every sheet and your whole chord library to a single file, and open it again to put it all back. Nothing here is uploaded, so this is the copy that survives clearing your browsing data.

The same app on a phone

The keyboard scrolls, a section reads left to right like a bar of music, and every control is a real touch target.

Not a cut-down version
The same sheets, the same library, the same PDF export. Nothing is held back for the desktop.
A tray, not a side panel
Saved chords sit in a tray at the top of the sheet, so the keys and the controls never get covered while you work.
Long-press to drag
A swipe scrolls the row; holding a chord card picks it up, so you can move it to another section.