Brinepost: Sourdough & Ferment

Your worktop is full of living things. Brinepost keeps track of all of them.

Start a batch — sourdough starter, kombucha brew, kimchi jar, or yoghurt — and Brinepost runs the day clock, sends the right reminders, and keeps the log you'll actually look back at.

TRACK EVERY BATCH • Day counters and progress for each active ferment • Per-ferment details: hydration, salt, volume, vessel, source • Opt-in observation sliders: rise, bubbles, aroma, tang, texture • Temperature in °C or °F, notes, and a photo log day by day

REMINDERS THAT MATCH THE FERMENT • Daily feeding reminders for your starter at your preferred hour • Check-in schedules for kombucha, kimchi, and yoghurt • Kombucha second ferment: move to 2F and the day clock and carbonation checks restart for the bottling stage

THE BUILT-IN GUIDE • Stages, common questions, and "what you might see" for all four ferments — written for real batches, fully offline • Guided troubleshooting that answers from the guide • For consumption questions the guide always points to official sources — Brinepost never makes food-safety calls

PRIVATE BY DESIGN • 100% offline. No account. No tracking. No ads. • Your batches, notes, and photos never leave your device. • Home-screen widget with your batch's day clock • Full support for iPhone, iPad, and Mac

FAIR PRICING, SAID UP FRONT Brinepost is free to try for 3 days with full access — you start the trial with one tap. After it ends, a single one-time purchase unlocks the app forever. No subscription. Family Sharing supported.