PanicTracker
A complete tracker (sequencer, sampler, and the song you didn't know you had in you) running entirely in your browser. It was built in four months of focused work by people who have spent decades writing music in rows and columns, and it works the way an instrument should: immediate, offline, and out of your way. When you're ready to hold it, the Pro handheld is the same instrument with real buttons, MIDI, and our own operating system.
Add it to your home screen
- Tap the Share button in Safari.
- Choose Add to Home Screen.
- Open PanicTracker from your home screen: full screen, offline, yours.
THAT'S THE REAL TRACKER UP THERE. RUNNING LIVE, NOT A SCREENSHOT, NOT A MOCKUP. TAP IN.
A love letter,
shipped as software
PanicTracker started the way most good instruments do: with a frustration that wouldn't go away. The trackers we grew up on, the ones that ran on Game Boys and hacked handhelds and made entire scenes possible, were either abandoned, stranded on old hardware, or slowly buried under software that asks more of your attention than your ears. We missed the feeling of a machine small enough to know completely, where a song is something you carve rather than arrange.
So we spent four months building the one we wanted to hold, with decades of living inside trackers behind every decision. The whole instrument is written in Rust: phrases, chains, tables, a real sample engine with time-stretching, tuned until it ran beautifully on cheap handheld hardware, and then brought to the browser so that trying it costs you nothing but curiosity. Your work saves as you go, and it runs offline. It will keep working years from now, whether or not we're having a good year.
If you already write music this way, we think you'll feel at home in the first five minutes. And if you've never touched a tracker: the grid looks intimidating for about twenty minutes, and then it quietly becomes the fastest way you've ever written music. We'd love for you to find that out the same way we did.
Stop the PanicHARDWARE FOR THE UNCOMPROMISING
The deep parts,
kept deep
Phrases & chains
The classic tracker workflow: build phrases, link them into chains, lay chains into a song. If you've used LittleGPT or LSDJ, your hands already know where everything is. That's deliberate, and it's a tribute.
Tables
Every note can carry a table: a little program of parameter changes that runs alongside it. One trigger becomes an arpeggio, a filter sweep, a stutter. This is where trackers stop being sequencers and start being instruments.
A real sample engine
Load WAV, FLAC, MP3, or OGG and play it across the keyboard with proper time-stretching, not chipmunk math. Slice it, reverse it, tune it. Your samples stay yours, stored locally and exportable as a zip whenever you want them back.
Made for a gamepad
The entire interface is reachable with a d-pad and four buttons, because that constraint is the soul of the workflow. Plug in any controller and the browser hands it straight to the tracker. Keyboard works beautifully too.
Works offline, installs anywhere
Add it to your home screen and it becomes a full-screen app that runs in airplane mode, on the train, in the basement. The first visit downloads everything; after that, the internet is optional.
Take your work anywhere
Your projects and every sample you load come back out as a plain zip whenever you want them: to back up, move to another machine, or carry onto the Pro. Nothing's locked away. And if you want more instrument, there's the Pro.
Practice on glass,
graduate to buttons
Hold your phone upright and PanicTracker grows a controller: the same d-pad, face buttons, and combos as the Pro, drawn on glass. Hold B and tap A to delete. Hold Y, move, release to copy. Every hour you put in here is muscle memory you keep when you pick up the hardware.
And we'll be honest with you, because honesty is the whole brand: a touchscreen is a rehearsal space. The Pro is where this instrument actually lives. Real travel under your thumbs, real clicks, a battery that outlasts the session, and the parts of the experience the browser can't carry: MIDI to your other gear, and the whole Schwung module catalog.
MEET THE PRO →Episode one is free.
Here's the trilogy
We grew up on shareware. The first episode of DOOM was free, it was the real game, and it sold the other two episodes better than any advertisement ever could. PanicTracker works the same way. The browser version is the genuine first episode, free forever, no tricks. PanicTracker Pro is the rest of the experience: a pocket handheld we tune, flash, and ship ourselves, running the native build on a real-time operating system we maintain, with MIDI, Schwung modules, and buttons you can feel in the dark.
| PANICTRACKERWEB · FREE | PANICTRACKER PROHANDHELD · BUNDLED OS | |
|---|---|---|
| The full tracker | Yesphrases, chains, tables, sample engine | Yessame instrument, native speed |
| Runs on | Any modern browserphone, tablet, laptop | Dedicated handheldphysical d-pad and buttons, all-day battery |
| MIDI in / out | – | Yessync and play with your other gear |
| Schwung modules | – | Yesloadable synth engines & FX, growing catalog |
| Operating system | Your browser | Our OSmainline real-time Linux, boots straight into the tracker |
| Audio latency | Lowgood enough to groove | Lowerreal-time kernel, tuned end to end |
| Price | Free | Buy oncehardware + OS + tracker, ready out of the box |
The green machine
Translucent green, pocket sized, and already running PanicTracker when you turn it on. We build the OS, we tune the kernel, we answer the email.
BUY THE PRO →