HandCompose: MIDI Studio
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About this app
HandCompose turns your phone or tablet into a portable music studio. It's a
touch-first multitrack MIDI sequencer and DAW (digital audio workstation) that
lets you sketch an idea, build it into a full arrangement, and export a standard
MIDI file โ all from the device in your pocket.
Lay down clips on the timeline, fine-tune every note in the piano roll, pick
instruments from a General MIDI sound set, and hit play. Everything is powered
by a bundled FluidSynth software synthesizer running on a low-latency audio
engine, so what you hear responds instantly to your touch.
WHAT YOU CAN DO
โข Multitrack arrangement โ Build songs from multiple tracks, each with its own
instrument. Drag clips around the timeline to structure your verse, chorus,
and bridge.
control. Zoom and scroll to work on the big picture or a single phrase.
โข General MIDI instruments โ Choose from a full GM instrument library, from
pianos and strings to synths and a dedicated drum kit.
โข Real-time playback โ Change tempo, mute, and solo tracks live while the song
plays. Nothing is "baked in," so you can experiment freely as you listen.
โข Undo & redo โ Every edit is reversible. Drag a whole clip and undo it in one
step.
โข Save & load projects โ Your work autosaves automatically, and you can keep
multiple named projects to come back to later.
โข Export to MIDI โ Render any project to a standard .mid file you can open in
desktop DAWs, notation software, or share with collaborators.
BUILT FOR TOUCH
The interface is designed from the ground up for fingers, not a mouse. Custom
scrubbing and pinch-to-zoom gestures make navigating the timeline and piano
roll fast and natural. A clean transport bar keeps play, stop, and tempo always
within reach.
LOW-LATENCY SOUND
Audio runs through a high-performance native engine for tight, responsive
playback with minimal delay โ important when you're auditioning ideas in real
time.
WHO IT'S FOR
โข Songwriters and composers who want to capture ideas on the go
โข Beatmakers sketching drum and instrument parts
โข Music students learning arrangement and MIDI
โข Anyone who wants a simple, capable mobile sequencer without a subscription
HandAcompose starts you with a clean, empty project โ no clutter, no demo
content to delete. Just open it and start writing.
Download HandCompose and make music wherever you are.
touch-first multitrack MIDI sequencer and DAW (digital audio workstation) that
lets you sketch an idea, build it into a full arrangement, and export a standard
MIDI file โ all from the device in your pocket.
Lay down clips on the timeline, fine-tune every note in the piano roll, pick
instruments from a General MIDI sound set, and hit play. Everything is powered
by a bundled FluidSynth software synthesizer running on a low-latency audio
engine, so what you hear responds instantly to your touch.
WHAT YOU CAN DO
โข Multitrack arrangement โ Build songs from multiple tracks, each with its own
instrument. Drag clips around the timeline to structure your verse, chorus,
and bridge.
control. Zoom and scroll to work on the big picture or a single phrase.
โข General MIDI instruments โ Choose from a full GM instrument library, from
pianos and strings to synths and a dedicated drum kit.
โข Real-time playback โ Change tempo, mute, and solo tracks live while the song
plays. Nothing is "baked in," so you can experiment freely as you listen.
โข Undo & redo โ Every edit is reversible. Drag a whole clip and undo it in one
step.
โข Save & load projects โ Your work autosaves automatically, and you can keep
multiple named projects to come back to later.
โข Export to MIDI โ Render any project to a standard .mid file you can open in
desktop DAWs, notation software, or share with collaborators.
BUILT FOR TOUCH
The interface is designed from the ground up for fingers, not a mouse. Custom
scrubbing and pinch-to-zoom gestures make navigating the timeline and piano
roll fast and natural. A clean transport bar keeps play, stop, and tempo always
within reach.
LOW-LATENCY SOUND
Audio runs through a high-performance native engine for tight, responsive
playback with minimal delay โ important when you're auditioning ideas in real
time.
WHO IT'S FOR
โข Songwriters and composers who want to capture ideas on the go
โข Beatmakers sketching drum and instrument parts
โข Music students learning arrangement and MIDI
โข Anyone who wants a simple, capable mobile sequencer without a subscription
HandAcompose starts you with a clean, empty project โ no clutter, no demo
content to delete. Just open it and start writing.
Download HandCompose and make music wherever you are.
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Whatโs new
โข Build songs from multiple tracks and clips
โข Edit every note precisely in the piano roll
โข Dozens of General MIDI instruments + a drum kit
โข Real-time tempo, mute & solo while playing
โข Export to standard .mid files
โข Edit every note precisely in the piano roll
โข Dozens of General MIDI instruments + a drum kit
โข Real-time tempo, mute & solo while playing
โข Export to standard .mid files
