Fermento

Andrej Jaššo

In-app purchases

About this app

Fermento — Fermentation Timer, Tracker & Guide

Master fermentation with the app that knows what every phase of every ferment actually needs. Kombucha, kimchi, tepache, sourdough, kefir, miso, tempeh, beer, mead, cheese and more — 40 ferments with expert phase timings, and room for every recipe you invent.

MULTI-PHASE TIMERS
Ferments are not one countdown. Track first and second fermentation, bulk and cold storage, primary and aging — each phase with its own live timer, circular progress and reminders that arrive when a phase is done. Run as many brews at once as you like.

KNOW WHAT LID EVERY PHASE NEEDS
Every phase says what closes the vessel — a breathable cloth, a loose lid, an airlock, or an airtight lid — and why. When a phase is airtight, Fermento tells you whether the gas has to be let out and whether the bottle has to be rated for pressure. Bottling phases carry their own vent schedule, so burp reminders are one tap away.

EVERY STEP HAS A CLEAR FINISH
What to taste or look for, the steps that move the batch on, and an objective check where one exists — like two matching hydrometer readings before you bottle. Completing a phase shows the handoff and the next vessel before you confirm, so the right jar is already to hand.

BATCH & INGREDIENT TRACKING
Record how many jars, the container size and the ingredients every time you start a brew. Recipe ingredients are pre-filled with quantities you can adjust. Total volume brewed shows up in your statistics.

YOUR FERMENTATION AI, ON YOUR DEVICE
Ask anything — is this mould or kahm yeast, why does it smell like acetone, is a bulging lid dangerous. Answers are grounded in a fermentation dataset built from USDA, CDC, NCHFP and university extension guidance. The model runs on your phone, so your questions never leave it.

BREW HINTS THAT KNOW YOUR FERMENT
Each brew gets a hint drawn from its real temperature limits, phase timings and pH targets — not generic advice. When a batch runs long or tastes sharp, the hint suggests what to do with it.

pH & TASTING NOTES
Log pH readings and tasting notes per phase, add progress photos, and review the whole run later.

HISTORY, INSIGHTS & PROGRESS
Every finished brew kept with its phases, durations, ratings and batch details — editable after the fact. Statistics show what you brew and how much. A skill tree and achievements track your progress from first bubbles to the 500 litre club.

IDEAS & READING
A growing feed of recipes, techniques and fermentation science, updated without an app update. See what other brewers liked most.

PRIVACY & SECURITY

Fermento is built with privacy as the foundation. Your ferments are stored locally on your device with:
• No accounts, ever
• No tracking, analytics or ads
• No name, email or location collected
• Tracking works offline
• On-device AI — your questions never leave your phone

Your fermentation data never leaves your device. Roadmap votes and article likes are anonymous: each one carries the item you picked plus an app-scoped device id, used only to keep a vote or a like to one per install. Nothing else is sent, and nothing identifies you. Full policy: fermento.andrej-jasso.com/privacy

PERFECT FOR

• Home kombucha brewers tracking multiple batches
• Kimchi and vegetable fermentation enthusiasts
• Traditional beverage makers (tepache, kvas, ginger beer)
• Sourdough, kefir, yogurt and cheese makers
• Homebrewers of beer, mead, wine and cider
• Anyone serious about tracking fermentation progress

Fermento is a tracking and educational tool. Always follow proper food-safety and sanitation practice.

What’s new

• Fermento+: an optional subscription — brew unlimited ferments at once, unlock the Monthly AI Report, add unlimited assistant sources, and make your roadmap vote count 3x.
• Monthly AI Report: a look back at what you brewed and what you never measured.
• Ferment cards: turn a finished brew into a shareable image.
• Sharper assistant answers, with Apple Intelligence support.
• Fixed a cramped sharing-card layout; PDF export is now part of Fermento+.