Yeast: Sourdough & Pizza

Two starters fed the same way can peak hours apart. A generic chart can't know which one is yours. Yeast learns it. Log your feeds and your kitchen temperature, and Yeast predicts the peak. Once you've logged three real peaks, Yeast calibrates the model to your culture, free, and every prediction after that gets sharper as you keep logging. Tell it when you want to bake, and it plans backwards from there, so feeds, ferments and folds land on your oven time. No AI guessing, no account, no ads. Everything runs on your phone. Pro is $19.99 a year with a 14-day free trial, or buy it once for $49.99 and keep it for good. FREE, AND GENEROUS • A sourdough starter with feed logging, peak predictions and reminders — plus an activation planner that back-solves your feed schedule from "ready to bake Saturday 9am". • Per-starter calibration — after three logged peaks, predictions tune to YOUR culture. Every peak you log after that sharpens it. • The FULL pizza dough calculator — Direct, Biga, Poolish and Sourdough methods, multi-flour, backward-solved to your bake time. Free forever, no ads. • The Balance instrument — see whether your dough will land tenacious or extensible before you mix, with plain-language fixes when it drifts. • A bake journal with photos, plus saved presets. YEAST PRO • Bread module — levain loaf recipes, the mix-water temperature to hit your target dough temp, and bulk-rise targets with aliquot-jar guidance. • Croissant module — lamination geometry for any fold sequence, butter-block quantities, and a proof-temperature guardrail. • Unlimited starters, unlimited journal entries, unlimited saved recipes, and every maker preset. WHY IT'S DIFFERENT Most apps count one number: total hours. Yeast models fermentation the way it actually works — time AND temperature, with separate curves for yeast activity and gluten breakdown. It knows a warm stage after a cold one behaves differently than the reverse. It knows every flour has a fermentation budget and warns you before you blow past it and the dough collapses. That's the difference between a timer and an engine that tells you why. PRIVATE BY DESIGN Everything runs on-device. No login, no tracking, no cloud. Your starters, your journal, your recipes — yours, on your phone. Fully available in English and German — interface and baking guidance. YEAST PRO PRICING $19.99/year with a 14-day free trial · $2.99/month · or $49.99 once for lifetime access. Yeast Pro Annual and Monthly are auto-renewing subscriptions. Payment is charged to your Apple ID at confirmation of purchase. The subscription renews automatically unless auto-renew is turned off at least 24 hours before the end of the current period; your account is charged for renewal within 24 hours prior to the end of the period. Manage or cancel anytime in your App Store account settings. The Lifetime option is a one-time purchase. Any unused portion of a free trial is forfeited when a subscription is purchased. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://yeast-baking.netlify.app/privacy.html