sleeping
scroll to wake it

momzu

it's asleep right now good morning. what do you need?
what it is

A voice AI that lives on your Mac.
Not in a browser. Not in a cloud.
On your machine.

what it does
01

Hold space. Speak.

Press and hold space, say what you want, let go. Or hit ⌘⇧J from anywhere on your Mac. It listens, thinks, and talks back. And when you'd rather write than talk, dictation mode types your words into any app.

sim · voice
space
02

Or just say its name.

Hands-free mode keeps one ear open — on your device, never the cloud. It sleeps through your calls, your music, your rambling, and wakes the instant you say momzu — a soft chime tells you it heard. Ask the thing, get the answer, it goes back to sleep on its own. And if it runs off with the wrong idea, say stop. It stops. Mid-sentence, mid-task, instantly.

sim · wake word
“…anyway, tuesday works for me” momzu “yes? i'm listening.”
listens on device · chimes when it hears its name
03

Any brain you want.

Claude in full agent mode, DeepSeek, Gemini — or a completely local model through Ollama. Switch minds in one click, and dial how hard each one thinks: from instant answers to deep reasoning. Momzu is the body; you choose the mind.

sim · minds
  • claude · agent
  • claude · api
  • deepseek
  • gemini
  • ollama · local
effort
high
04

Your voice never leaves.

Speech recognition is whisper.cpp running on your machine. Replies are spoken by your machine. No audio is ever uploaded, recorded, or heard by anyone but Momzu — the cloud only ever sees text, and only when you pick a cloud model.

sim · privacy
your mac
mic
whisper.cpp
voice out
cloud×
audio leaving this box: zero
05

It drives your browser.

Your real Chrome — your logins, your tabs. It searches, reads pages, fills forms, clicks buttons, compares prices while you make coffee. Like handing your mouse to something that never gets tired.

sim · browser
chrome — flights to lisbon
search
06

It sees your screen.

Ask "what's on my screen?" and it takes a look — reads the clutter, finds the thing, tells you what matters. Useful when an error pops up and you can't be bothered to read it yourself.

sim · vision
spotify · playing · 34% cpu
07

It builds finished work.

Ask for a website and it writes one. A script, a summary, a folder sorted and renamed — it doesn't just answer questions, it leaves finished work on your disk while you talk.

sim · builder
writing index.html…live.
08

It remembers you.

Preferences, projects, the way you like things done — kept as plain files on your own disk, readable any time. Nothing hidden, nothing synced away. Tell it to forget something and it's gone.

sim · memory
youprefers short answers
coffeeoat. always oat.
projectthe berlin site
written to disk · plain files
09

It knows your day.

Connect Google Calendar once, then just ask — "what's on today?", "am I free thursday?". It reads your schedule out loud and tells you what actually matters, the way a person would.

sim · calendar
10:00studio session
14:00call with teddy
18:30dinner in mitte
“— and you're free after seven.”
10

It speaks on schedule.

"Every morning at 8:30, brief me." From then on it just happens — the date, the weather, your calendar, spoken out loud while you make coffee. Routines are small rituals Momzu keeps for you, no tapping required.

sim · routines
08:30morning briefing — date · weather · your day
23:00wind down — tomorrow at a glance
it doesn't notify — it talks
11

Play that exact song.

Not "play music" — "play kind of blue". It finds the actual track on Spotify and presses play, turns it down when you say so, skips when you say skip. Your hands never touch a keyboard.

sim · music
“play kind of blue”
kind of blue — miles davis
spotify · now playing
12

It's in your pocket too.

Scan a QR code and your phone becomes another mouth and ear for the same Momzu — same memory, same Mac, same voice. Talk to your machine from the couch, the kitchen, the balcony.

sim · phone
connected
same momzu · your phone is the mic
13

It runs your Mac.

Opens apps, controls Spotify, sets the volume, checks what's eating your battery, keeps your objectives. Reminders don't just pop up — they speak, out loud, at the right moment.

sim · system
volume
21:40
reminder — call mom back
open
ableton live
under the hood
$momzu --spec
speech-to-textwhisper.cpp — on device
text-to-speechmacos voice or piper — on device
audio uploadednone. ever.
mindsclaude agent · claude api · deepseek · gemini · ollama
reasoning effortadjustable, per model
browser controlyour real chrome — logins stay yours
screen visionon demand — looks only when you ask
memoryplain files on your disk, open them anytime
hotkeyshold space · ⌘⇧J system-wide
wake word"momzu" — hands-free, detected on device
interruptsay "stop" — it stops. instantly, even mid-task
while it's busykeep talking — requests queue, nothing is lost
calendargoogle calendar — asked out loud, answered out loud
routinesscheduled briefings — it speaks on time
musicspotify — any song, by name
phonescan a qr — talk to your mac from anywhere in the flat
account requiredno
telemetrynone
price$0
MOMZU
00:00:00
youwhat's eating my battery?
momzu
youyes, kill it.
momzu
holding space…
CLAUDE
the whole app. that's it. that's the point.

Free.
Because it should be.

download for macos
free · apple silicon · no account · no tracking
it helped you? buy me a coffee
momzu runs on caffeine, apparently
two minutes of setup
  1. open it — drag momzu into applications. first launch: right-click → open → open (it's unsigned). allow the microphone. it downloads its ears once (~900 mb, one time).
  2. connect a mind — momzu is the body; you pick the brain. using claude (recommended)? install claude code in terminal — curl -fsSL https://claude.ai/install.sh | bash — then run claude once and sign in with your claude account. otherwise press keys in momzu and paste a deepseek or gemini api key — or go fully offline with ollama.
  3. talk — hold space and speak. or switch on hands-free and just say "momzu" from across the room.
full manual: read me first