# Fermento: Sourdough Tracker — Starter, kombucha, kraut&more > Starter, kombucha, kraut&more (iPhone/iPad app by Jonas Polenz.) - Source: https://appshunter.io/ios/app/fermento-sourdough-tracker/id6807519703 (this page in markdown: same URL + `.md`) - Developer: [Jonas Polenz](https://appshunter.io/developer/6792573374) - Category: Food & Drink, Utilities - Price: Free with in-app purchases - Age rating: 4+ - Requires: iOS 17.0 · 12 MB - Languages: American English, Dutch, French (France), German (Germany), Italian, European Spanish - Released: 2026-09-13 - Data updated: 2026-09-17 - User reviews in markdown: https://appshunter.io/ios/app/fermento-sourdough-tracker/id6807519703/reviews.md ## What is Fermento? Your sourdough starter is alive. Fermento treats it that way. Klaus — or whatever you name yours — has a face. Leave him too long and he looks hungry. Feed him and he beams. It sounds silly right up until you realise you haven't killed a starter in months. SIX JARS, ONE SHELF Sourdough starter, brine pickles, kombucha, kraut and kimchi, yogurt and kefir, ginger bug. Each one gets its own character, its own rhythm and its own checklist. REMINDERS THAT READ THE ROOM Tell Fermento how warm your kitchen is and it shortens the gap between feeds on hot days, stretches it when it's cold. Quiet hours are respected — nothing pings you at 3 a.m. Burp reminders for pickles, fizz checks for kombucha, wake-up reminders when a jar comes out of the fridge. WHEN SOMETHING LOOKS WRONG Grey liquid on top? White film? No rise? Pick what you see and Bubbie explains what it actually is — then installs a real fix on the jar: a changed ratio, a shorter schedule, a set number of feeds. The jar stays in rescue mode until it's back on track. IT LEARNS YOUR STARTER Log a rise and Fermento remembers how long it took. After a handful of logs it stops guessing and tells you when your starter will peak — with a countdown on the lock screen so you catch the window instead of missing it. EVERYTHING YOU DID, KEPT A calendar that fills itself, a photo timeline per jar, and a monthly recap you can share. Dough and brine calculators. Bake-day timers. Discard recipes so nothing goes in the bin. BADGES YOU EARN Thirteen milestones and sixteen outfits for your jars. None of them can be bought — they only come from actually looking after your ferments. NO ACCOUNT, NO TRACKING Everything lives on your iPhone. Sync across your devices with your own iCloud if you want it. No sign-up, no ads, no analytics, nothing sold on. The weather heads-up is optional and only ever sends a rounded-off region, never an address. FERMENTO PLUS Free keeps two jars and 30 days of history. Fermento is a logbook, not a lab. It won't tell you whether something is safe to eat - when in doubt, throw it out. Apple Standard EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Terms of Use: https://jonaspolenz368.github.io/Fermento/terms.html Privacy Policy: https://jonaspolenz368.github.io/Fermento/privacy.html ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | FermentoPlusMonthly | $3.49 | per month | **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | FermentoPlus Lifetime | $17.99 | one-time | ## Version history (last 2 releases) ### 1.0.1 — 2026-09-15 - bugfixes and improvements ### 1.0 — 2026-09-14 No release notes. ## More apps by Jonas Polenz - [Walk the Odyssey \| Stoic Steps](https://appshunter.io/ios/app/walk-the-odyssey-stoic-steps/id6792573372) - [Diemo \| Finance and Budget](https://appshunter.io/ios/app/diemo-finance-and-budget/id6793875322) - [Touching Green: Go Outside](https://appshunter.io/ios/app/touching-green-go-outside/id6797519686) All apps by Jonas Polenz: https://appshunter.io/developer/6792573374 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-17.*