Yeast: Sourdough & Pizza

Dough calculator & starter

Only for iPhone

Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.

iPhone

Yeast is the sourdough engine for people who care how fermentation actually behaves — not another recipe list, and definitely not an AI chatbot. Tell it your starter's feed ratio and your kitchen temperature: it predicts the peak — and the more you bake, the better it knows YOUR culture. Tell it when you want to bake: it back-solves the whole schedule — feeds, ferments, folds — so the last stage finishes exactly when you pull the loaf. The math is research-grounded and runs entirely on your phone. No account. No ads. No data leaves your device. 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". • 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 • Per-starter calibration — log a real peak and predictions tune to YOUR culture. The more you bake, the sharper it gets. • 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

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• Plan your mixing time: a new Mix stage, and every preset now includes 15 minutes of kneading, so the whole schedule starts on time. • Reorder stages: each stage has a menu to move it up or down, insert a stage above it, or remove it. • Number keyboards now have a checkmark button to close them.

The developer, Philipp Mack, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Linked to You

    The following data may be collected but it is not linked to your identity:

    • Usage Data

Privacy practices may vary, for example, based on the features you use or your age. Learn More

The developer has not yet indicated which accessibility features this app supports. Learn More

Seller
Philipp Mack
Size
3.9 MB
Category
Food & Drink
Compatibility
Requires iOS 18.0 or later.
  • iPhone
    Requires iOS 18.0 or later.
  • Mac
    Requires macOS 15.0 or later and a Mac with Apple M1 chip or later.
  • Apple Vision
    Requires visionOS 2.0 or later.
Languages
English and German
Age Rating
4+
In-App Purchases
Yes
  • Yeast Pro - Lifetime $49.99
  • Yeast Pro - Monthly $2.99
  • Yeast Pro - Yearly $19.99
Copyright
© 2026 Philipp Mack