For craft brewery head brewers & QC managers

Your fermentation
co-pilot.

FermPilot uses Monod-kinetics ODEs to predict gravity curves, VDK formation, and the exact moment your beer is safe to package. Log actual readings and see how the model performs in your brewery.

Run a free simulation →See how it works

US-05 American Ale · 12°P OG · 20°C · 1.0 M cells/mL/°P — live simulation

Parameters from Boulton & Quain (2001) and Casey & Ingledew (1986). Same kinetics used in commercial brewery research.

What you get

Monod Kinetics Engine

Four coupled ODEs integrated with RK4 every 2 hours. Predicts gravity, ethanol, biomass, and VDK simultaneously — not independently.

VDK Rest Optimizer

Models diacetyl formation and reabsorption. Recommends the earliest safe rest start and predicts when VDK clears the 0.15 mg/L threshold.

Actual vs. Predicted

Log gravity readings from your hydrometer or refractometer. FermPilot overlays actuals on the predicted curve so you can see how the model performs in your brewery.

The engine is not a black box

dX/dt =  (μ − kd) · X                         // yeast biomass
dS/dt = −(μ / Yxs) · X                        // fermentable substrate
dP/dt =  (Yps / Yxs) · μ · X                  // ethanol
dV/dt =  α·μ·X + β·X − γ·V                    // VDK / diacetyl

μ(S,P) = μmax · S/(Ks+S) · max(0,1−P/Pm)^n   // Monod + Luong inhibition

Pricing

Free

✓3 sims/month
✓10 built-in strains
✓7-day window
✓VDK optimizer
✓Actual vs. predicted log

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