Know when your
beer is ready.

Gravity (°Plato), ethanol (%ABV), yeast biomass (g/L), and VDK (mg/L) are predicted simultaneously over up to 30 days, solved as coupled differential equations rather than approximated from a fixed attenuation table. The same math used in peer-reviewed brewing science.

FermPilot shows you the exact hour your gravity will stabilize so you can schedule cold crash with confidence and plan tank turnover without pulling daily samples or adding a 48-hour safety buffer.

The VDK model tracks diacetyl precursor formation and reabsorption separately. You get the earliest safe rest start date and the predicted clearance time against your packaging threshold, so you stop holding tanks three days longer than necessary.

Log your gravity readings as the batch runs. FermPilot overlays actuals on the predicted curve so you can see how the model performs on your specific yeast, water chemistry, and pitching practice, building confidence in the predictions one batch at a time.

US-05, WLP001, WY1056, W-34/70, S-23, and five more common ale and lager strains are ready to use. Pro users can add custom strains: enter your own Monod constants from in-house calibration or supplier data and FermPilot will model your house yeast as accurately as the commercial ones.

Model diacetyl rests, crash ramps, and step-mash profiles as a continuous temperature curve rather than a single fixed value. The engine corrects the growth rate at each step so predictions stay accurate even when your fermentation isn't running at a constant 20°C.