JamJar: Sheet Music & Chords

Collect, edit and play sheet music, chords and lyrics. Turn scans into scores you can transpose. Synced across iPhone, iPad and Mac.

JamJar keeps your whole song collection in one place: sheet music, chord charts and lyrics, organized, searchable and synced across iPhone, iPad and Mac through your own iCloud.

As a hobby musician, my music was scattered everywhere: PDF books, tunes from public-domain archives, photos of pages off my shelf and several music apps. Finding a song again was harder than playing it, so I built JamJar to be one shelf for all of it.

NEW: TURN A SCAN INTO SHEET MUSIC YOU CAN EDIT • Convert to Sheet Music (ABC) reads a printed page, scan or PDF and writes it out as a new song you can edit, transpose and play back • Bars it isn't sure of are flagged for you to check against the original, which stays untouched beside it • Runs on your device, offline, after a one-time download of about 1.6 GB • Works best on printed single-staff music such as lead sheets, fake books and tunebooks. Handwritten pages are unreliable, and lyrics aren't read • Needs a device with plenty of memory. On others the command is hidden and the rest of JamJar works as usual

NEW: WRITE MUSIC ON THE SCORE • Tap a note to change its length, accidental or pitch, or drag it up and down the staff • Enter notes from an on-screen piano, or type them on a keyboard without writing any ABC • Add chord symbols, ties, triplets and other tuplets, repeats and endings, D.C. and D.S. marks, articulations and dynamics • Hear every note as you enter it • Full bars close themselves, and bars that don't add up are flagged • The score and its ABC source stay in step, so you can edit whichever is quicker

BRING YOUR OWN MUSIC • Import single songs or whole books as PDFs and images • Scan paper books with the camera on iPhone or iPad • Split a scanned book into separate songs automatically, titled for you • Search open tune archives, or describe the tune you're after in your own words • Open files from the apps you already use: ChordPro, ABC, OnSong, OpenSong, iReal Pro and MusicXML

PRACTICE WITH A BACKING BAND • Hear ABC, MusicXML and iReal Pro charts played with melody, chords, bass and drums, in a groove that suits the tune • Fade each part on the mixer, or pull one out and play it yourself • Loop a tricky passage, with a metronome and count-in

ON STAGE WITH PERFORMANCE MODE • One chart, full screen, with the screen kept awake • Turn to the next song with a swipe, the keyboard or a Bluetooth page-turn pedal • Editing is locked, so nothing changes by accident mid-set • Build set lists and share them with your bandmates

CREATE, EDIT AND ORGANIZE • Write songs as lyrics and chords (ChordPro), sheet music (ABC) or chord charts • Transpose to any key • Draw and highlight on your sheet music • Tag, search and filter your library • Ask about a song in plain language, or ask for changes such as tidying the chords, powered by Apple Intelligence • Automate with Siri and Shortcuts • Private sync through your own iCloud: no account, no sign-up

JamJar speaks English and Swedish, with more languages on the way.

Whether you're rehearsing, teaching or on stage, JamJar keeps every song ready to play.