What operating systems does Bridge support?+
Bridge ships natively for both macOS and Windows. macOS requires macOS 26 (Tahoe) or later. Windows requires Windows 10 build 19041 (the May 2020 update) or Windows 11. Both builds are signed and notarized. The web app — Guided Roast, analytics, inventory, cupping, community — runs in any modern browser on macOS, Windows, Linux, iOS, and Android.
Is there a Linux version of Bridge?+
Not yet. Bridge ships for macOS and Windows today; Linux is on the roadmap but doesn't have a public timeline. The First Crack web app, including Guided Roast, works on Linux via any modern browser, so you can run the full analytics stack on Linux as long as you're comfortable typing probe readings instead of streaming them from hardware.
Is there an iOS or Android app?+
There is no dedicated iOS or Android app. The First Crack web platform is mobile-responsive and works in Safari and Chrome on iPhone and Android — including Guided Roast. Bridge requires a desktop OS (macOS or Windows) because it talks to roaster hardware over USB, Bluetooth, or local-network WiFi.
Does First Crack sync between Bridge and the web app?+
Yes. Real-time sync between Bridge and the web app. While you're roasting, frames stream from Bridge into the live chart at one-second resolution. After the roast, the full profile syncs to the cloud and appears in the web app, analytics, and on any other device you're signed in on. Edits to names, notes, ratings, and bean links from the web flow back the other direction — Bridge picks them up on its next sync pass.
Which roasters does Bridge support today?+
Bridge supports the Kaleido M-series (both the M1 and M10 are confirmed working over USB-serial or Bluetooth), plus Phidget thermocouple boards over USB, Croaster over WiFi, and TC4 (Arduino / aArtisan) over USB-serial. The last three are monitor-only: Bridge reads the curve but doesn't drive the controls. Phidget is confirmed on real hardware; Croaster and TC4 support is new and still looking for its first real-hardware validators, so if you own one, your beta request gets priority review and direct support from us. More roasters land as the voting roadmap on the beta signup page fills out. If your roaster isn't on the list yet, request access and tell us what you roast on, and your vote shapes the order we tackle them in.
What's the difference between Guided and Auto recipe mode?+
Both run the same recipe. In Auto, Bridge fires each step at its trigger: when bean temp crosses 300°F, the heat moves to 60% on its own, and you can cancel any step you don't want. In Guided, every step becomes a cue at its trigger and nothing happens until you tap Set now, so you stay on the dials with the recipe as a co-pilot. You can switch modes mid-roast. Auto requires a roaster Bridge can command (Kaleido today); Guided works everywhere.
Do recipes work if my roaster can't be controlled?+
Yes. On a monitor-only rig (Croaster, TC4, Phidget), recipe steps still cue you at their triggers: the cue says what to set, you make the move on the machine, and one tap logs it into the roast record. The control strip's heat, fan, and drum steppers do the same for manual moves and are marked Monitor · logs only. Nothing is ever transmitted to the roaster; everything you state is recorded, so even an uncontrollable rig ends up with a full control history alongside its curve.
Can I undo a mistapped roast event?+
Yes. Marking an event by hand shows an Undo toast for a few seconds; one tap reverts it. Auto-detected events (charge, turning point, and the dry-end fallback) don't offer undo because the app would immediately re-detect them from the curve.
Does First Crack use Celsius or Fahrenheit?+
Your choice, per account. Bridge reports whatever the hardware sends and the platform normalizes to a single canonical scale, so curves from a °C roaster and a °F roaster compare cleanly. The display unit is a setting; flipping it converts everything, including imported Artisan history.
Is Bridge free?+
Yes, while in private beta. Approved testers get Bridge at no cost. Long-term pricing has not been decided — when we land on it, current beta testers will get a heads-up first.
How do I get Bridge access?+
Bridge is in private beta. Request access at firstcrack.app/beta — we read every signup and approve by hand. Small numbers, high care. Supported-roaster requests get a magic-link invite and Bridge download. Unsupported-roaster requests are logged as a roadmap vote that shapes which models we add next.