nothing you play gets lost.
Plug in. Amp on your headphones. Drums running, or none at all. jam records the whole session and writes the notation while you play. The riff you would have forgotten by tomorrow is still there, as audio, as notation, and as a clip that lands on the grid in your DAW.
plug in. play. keep it.
The whole session, always.
Your dry guitar signal and the drum clock, sample-exact together. Nobody presses record. Play for an hour; the limit is your disk, and jam shows you how much is left. It all stays on your machine.
Notation while you play.
Chords on change, a slash per stroke with its direction, single notes on runs. Rough on purpose while you play, so it keeps up. A precise pass after you stop is being measured on real guitar recordings and ships when it holds up.
Straight onto the grid.
Mark the good part. jam exports the clip with its tempo map: WAV stems with a common start, MIDI, JSON and a Reaper project. Open it in your DAW and it is already in time. Bar-line snap by default, with handles before and after.
the drum machine is the ruler.
Drums and recording share one clock inside jam. When you play to its click or one of its three sampled kits, jam knows the bar grid exactly. That is what makes the notation line up, the export land in time, and the good part start on a bar line instead of somewhere in the middle. Jam without drums and you still get everything, with second marks instead of bars.
only what has been measured.
The live view is allowed to be wrong; the archive is not. The precise pass after you stop ships when it has proven itself on real guitar recordings, not before. Until then the interface says so instead of showing a button that pretends. And we do not race anyone on amp tone or tracking latency. jam sells that nothing gets lost.
what you need
Windows 10 or 11
A small native audio engine, amp, runs beside the browser. That is what gets the latency down to what you would accept from an amp. No Mac build yet; we say so rather than promise one.
USB audio interface with ASIO
A Scarlett Solo is plenty. Guitar goes straight in, dry. Headphones out. No microphone mode, no phone.
NAM amp models
Bring your own Neural Amp Modeler captures or use the ones that ship with jam. Cabinet impulse responses included. The engine behind it is amp, part of the plan. The amp is on your headphones; the recording stays dry, so you can change the sound later.
jam runs on windows.
Sign up, log in, press download. The signed Windows build comes straight from your account, no mail, no waiting list. Everything is free until 23 December 2026, no card, and it is the same account as tab. Bring an audio interface; there is no Mac build yet.