Demijohn
Mead · Cider · Country wine

Watch every batch
find its gravity

Log readings, see the curve, and know your ABV the moment fermentation settles. Nutrient plans, reminders and your cellar live in the same place as your notes.

Get early access See what it does
Coming soon on theApp Store Coming soon onGoogle Play
What it does

Everything a slow ferment needs

Readings and the curveSG, Brix or Plato with temperature correction. The gravity chart shows when it is done, and ABV updates by itself.
Nutrient plans that remind youTOSNA additions computed from your must and yeast, each one scheduled as a push reminder.
Racking, bottling, drink-byA timeline for every batch and reminders for the things that happen weeks apart.
iSpindel, Tilt and RAPT PillPoint your hydrometer at Demijohn and readings arrive every 15 minutes, with alerts when something stalls.
Cellar and tastingsKnow what is on the shelf, when it is ready, and how it changed over the years.
Share, export, labelA public page for each batch, PDF and CSV export, and QR bottle labels that link back to the log.
How it works

Three steps, then patience

Start a batch

Pick mead, cider or wine, set volume and target gravity, choose a yeast from the catalog.

Log as you go

Readings, additions, racking and photos. Or let a digital hydrometer do it.

Bottle and wait

Bottles land in the cellar with a drink-from date. Demijohn tells you when it is time.

Pricing

Free to log. Premium to remember.

Free

$0
  • 3 active batches, unlimited archive
  • Readings, events, timeline and gravity chart
  • ABV, honey, back-sweetening, sulfite and priming calculators
  • Manual reminders with push
  • 1 photo per batch, sync across devices
7 days free

Premium

$19.99 / year, or $2.99 a month
  • Unlimited batches and photos
  • Automatic TOSNA plans with reminders
  • iSpindel, Tilt and RAPT Pill
  • Cellar windows, tastings and stats
  • PDF and CSV export, QR bottle labels
  • Household sharing

Founder price for the first 500 yearly subscribers: $14.99 a year, for as long as you stay subscribed.

Early access

Be first to pour

Leave your e-mail and we will write once, when the app is in the stores.