Coffee roasting software

Live software for the Croaster.

Bridge reads your Croaster over WiFi and streams every degree to your First Crack library at 1 Hz. Auto phase detection, event keyboard, cloud sync, community sharing.

Request Bridge beta access How it works

Live Roast — reference curve10:00 light-medium

Bean380°

ChargeDrop 420°

Env340°

RoR0°/min

Supported models

Croaster (WiFi)

Confirmed

Connects over local WiFi. Live read of BT, ET, and computed RoR. Monitor-only — see below.

How it connects

WiFi (local network)

Bridge joins the Croaster on your local network and starts reading temperature data the moment it sees a signal. No USB cable required; no pairing flow.

Croaster and your laptop on the same WiFi network
macOS 26+ or Windows 10 build 19041+ / Windows 11
No additional drivers required

Heads up

Monitor-only today. Bridge reads the Croaster's temperature feed but does not drive heater, fan, or drum controls — you keep using the roaster's own panel for that. Live logging, phase detection, event keyboard, RoR, and cloud sync all work; the only thing missing is software-driven adjustment of the roaster itself.

What you get

Live BT + ET + RoR

Bean and environment temperatures stream from the Croaster at 1 Hz. RoR computed inline using a 30-second linear-regression window — same algorithm as the macOS desktop app.

Automatic phase detection

Drying, Maillard, and Development phases mark themselves on the chart as the bean temp crosses each transition. No manual tagging required.

Event keyboard

Numpad-first logging: CHARGE, Turning Point, Dry End, First Crack, Drop. Tap or hit the highlighted key — Bridge timestamps everything at exactly the second you fire it.

Cloud sync from the first session

Every Croaster session lands in your First Crack account automatically. Pick up on any device — bean records, cupping notes, recipes all in one library.

Community comparison

Publish your best curves and browse what other roasters are doing with the same beans. Filter the community feed by origin, process, or roast level to find a baseline.

Inside the app

Live roast curve mid-maillard with BT, ET, and RoR overlays on a dark theme — Mid-maillard — BT climbing through 300°F, RoR pulling back, the chart filling in as the roast progresses.

First crack moment on the live roast chart, dark theme — First crack landed and logged — the FC marker drops onto the chart the second you tap the event button.

Full roast curve from charge to drop, dark theme — Full curve at drop. Every degree captured, every phase auto-detected, every event you logged on the timeline.

Ready to log every Croaster roast?

Bridge is in private beta — we review every request by hand. Approval usually lands within a few days. While you wait, Guided Roast runs in any browser with just a thermometer.

Request Bridge beta access Try the browser app first