RoastSignal vs CrackLog

RoastSignal helps home coffee roasters track roast sessions, record roast milestones, save roast history, and receive AI-assisted roast feedback. The app does not require an account or login. Core workflow: 1. Configure a roast setup or Quick Start Preset 2. Start a roast timer 3. Record roast milestones 4. Review AI analysis 5. Save roast history 6. Export or share roast results Camera and photo access are optional and used only when the user chooses to analyze bean or roast photos. The Coffee Expert feature requires an internet connection.

Hear the crack, press the big button once. A dot lands on the curve right there. CrackLog is a roasting log for home roasters who read the temperature off the machine and listen for the cracks themselves. Start the timer at charge, log temps as you go, tap first crack and second crack when you hear them, and the roast curve draws itself in real time. At drop, the batch becomes a card in your collection. Nothing to sign up for and nothing uploaded: your roast curves and batch cards never leave the handset you tapped them into. TRY IT BEFORE YOU ROAST A demo compresses a ten-minute roast into thirty seconds. You tap the cracks yourself and watch the dots land, without a single green bean. Demo batches stay out of your stats and overlays. A ROAST, START TO FINISH Charge: the timer starts at 0:00. Roasting: log the temperature shown on your roaster as often as you like. Keep the screen on while the timer runs. Cracks: tap First crack when you hear it, then Second crack. The dot is placed at that exact second. Mis-tapped? Undo on the spot. Drop: the timer stops, total time and DTR are worked out, and the batch card is made. DONE BY HAND, ON PURPOSE You type the temperature you see and you press the crack you hear. CrackLog never guesses your roast level and never grades the roast. It records what happened, as it happened. FAN AND POWER, LOGGED IN PLACE Each time you turn fan or power (1 to 9), one tap. The changes draw as a step line in a lane under the curve and sit in a table on the card, so next time with the same green coffee you can follow "fan 7 at 3:20" exactly. Tap yellowing and the end of first crack too and the drying, Maillard and development ratios are summarised for you. Preheat and room temperature go in the batch details. WHAT A CARD HOLDS Time-by-temperature curve with first and second crack dots Fan and power changes, yellowing and end-of-first-crack times Green coffee, origin, charge weight, drop weight, weight loss, roaster used, preheat and room temperature Roast level, eight steps from Light to Italian, chosen by you One line of roasting notes Browse the collection by green coffee or roast level. There are no streaks, no missions and no nagging to roast every day. SIDE BY SIDE WITH THE LAST BATCH Overlay the previous batch of the same green coffee as a translucent curve and compare as you roast. Roast again from any card and the green coffee, charge weight, roaster and preheat are filled in before you start. ROASTER'S KIT (OPTIONAL, ONE-TIME PURCHASE) Replay guide: start the same green coffee and the last batch's fan, power and crack times run alongside your timer. Multi-batch overlay: up to three earlier batches on one curve. Second temp: alternate between two readouts, such as bean temperature and exhaust temperature. Name them yourself and a second line is drawn on the curve. Roaster profile: rename the two dials and set their ranges to match your machine. Curve share card, green coffee stock, stats by green coffee, your own marks, card theme. Not a subscription. Whatever is free today stays free. YOUR RECORDS BELONG TO YOU Export every batch to a single file and import it again. Delete everything in one step from Settings. Logging works without an account, without a connection and without touching your photos, mic or location. Ads never appear and nothing renews. One optional lifetime purchase, handled by the App Store.