Brinepost: Sourdough & Ferment

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

Start a batch — sourdough starter, kombucha brew, kimchi jar, or yogurt — 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 yogurt
• 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

PRIVATE BY DESIGN
• Brinepost stores batches, observations, notes, photos and settings on your device. Photo analysis and reminders run locally. No account, ads or analytics.
• Device backups may retain or restore app data. Exports and sharing send copies to destinations you choose. Deleting the app removes local journal data, not backups or exported copies. Trial state may remain in the device Keychain after uninstalling and reinstalling the app.
• 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 — no subscription. Family Sharing supported.