One app.
Full lifecycle.
From recipe planning through brew day, fermentation, racking, conditioning, to bottling. Every stage guided and tracked.
- 🍯Mead — Traditional, melomel, cyser, braggot, pyment
- 🍎Cider — Still, sparkling, hopped, spiced
- 🍺Beer — BIAB, all-grain, kit, extract, partial-mash
- 🧪Wash — Simple sugar fermentation with ABV targeting
What it looks like
Gravity prediction model
Fermentation follows an exponential decay curve. Given a few gravity readings, the app fits the model and tells you when you'll hit target FG.
- 1.Fit k via non-linear least squares over your gravity log
- 2.Solve for t when SG(t) = target FG
- 3.Show R² — below 0.9 it warns you the data is too sparse to trust
- 4.Refits live every time you log a new reading
Auto-logging gravity with WiFi hydrometers
The iSpindel and RAPT Pill are WiFi hydrometers you float in your fermenter. They measure tilt angle, convert to gravity, and POST readings to a URL you configure. Both are integrated.
-
1.Device POSTs to
/api/hydrometer/ispindel— no auth required, device auto-registers by hardware ID - 2.Rate limited at 10 seconds between pushes from the same device
- 3.App claims the device by hardware ID, binds it to a batch
- 4.App polls for latest reading and history — auto-populates the gravity log
corr-gravity
field) is preferred over raw when present.
Raw values greater than 2.0 are normalised
from SG×1000 format automatically.
// Device POSTs:
{
"name": "MySpindel",
"ID": "abc123",
"angle": 35.2,
"temperature": 20.1,
"battery": 4.1,
"gravity": 1.065,
"corr-gravity": 1.063
}