DoughCalculator Sourdough

Sourdough math and baking

Free · In‑App Purchases

Scale a recipe, set water temperature, build a levain, plan ripening, proofing and baking – plus the book "Sourdough Made Easy". No sign-up, no ads. DoughCalculator räknar ut ditt surdegsbröd: från receptet via vattentemperatur, levain och jäsning till baktiden. I appen finns också boken ”Surdeg på ett enkelt sätt”, som går att DoughCalculator works out your sourdough: from the recipe through water temperature, levain and proofing to the bake. The book "Sourdough Made Easy" is built in and can be read offline. RECIPE Enter your ingredients and see the key figures of your dough at once, such as hydration and baker's percentages. Scale the recipe to any amount, one loaf or ten. The recipe stays saved on your device. TEMPERATURE How warm must the water be for the dough to reach its target temperature? Set temperatures conveniently on a dial. BUILD A LEVAIN Work out how much starter, flour and water you need for your levain – also with a freely chosen share of flour and water. RIPENING Plan when your levain will be ripe: choose the feed ratio and the temperature, set the time on the time dial and see what to expect. The times for other feeds and other temperatures are shown alongside as an overview that can be shared or printed as a PDF. PROOFING Estimate how long your dough's fermentation takes: by temperature and levain share, including a custom share, as a rule of thumb from baking practice. BAKING How long does my loaf need to bake? The baking calculator takes weight and shape (free-standing, loaf tin or pot) into account and explains what happens in the oven. THE BOOK (DOUGHBUCH) The book is included as a Hobby edition and a Pro edition, with graphics and photos, in English, German and Swedish, and can be read offline. Its chapters are linked with the calculators; the app remembers where you stopped and offers "Continue reading". The book is also available as a print PDF to view, print and save. The Hobby edition is free. OPTIONAL ONE-TIME PURCHASE You unlock the Pro edition of the book once – no subscription. The purchase can be shared through Family Sharing. The Pro chapters come with a short preview and a free sample before you buy. The app itself is free to download, and all calculators and the Hobby edition stay free. HOW THE APP IS BUILT • English, German and Swedish – follows the system language or can be switched in the app, for app and book together • Text size follows your system settings (Dynamic Type) • Light and dark mode • iPhone and iPad • Free to download, optional one-time purchase • No sign-up, no account • No ads, no tracking • Everything you enter stays on your device • Calculators and book work without internet The times and notes are rules of thumb from baking practice. Your flour, your oven and your starter may differ; in the end, trust the dough rather than the clock.

Ratings & Reviews

  • This app hasn’t received enough ratings or reviews to display an overview.

• New: Temperature – works out the water temperature for your target dough temperature • New: Build a levain – also with a freely chosen share of flour and water • New: Ripening with a time dial and an overview of ripening times • Set temperatures on a dial, amounts on a spinning dial • New icon and fresher colors • The book is newly revised, with graphics, photos and tables; Hobby edition still free • Optional: Pro edition as a one-time purchase (no subscription, Family Sharing), with a short preview of the Pro chapters

Version 1.1

The developer, Stefan Ruhmkorf, 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 Collected

    The developer does not collect any data from this app.

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

    Accessibility

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

    Information

    Seller
    Stefan Ruhmkorf
    Size
    128.3 MB
    Category
    Food & Drink
    Compatibility
    Requires iOS 17.0 or later.
    • iPhone
      Requires iOS 17.0 or later.
    • iPad
      Requires iPadOS 17.0 or later.
    Languages
    English and 2 more
    • English, German, Swedish
    Age Rating
    4+
    In-App Purchases
    Yes
    Copyright
    © 2026 Stefan Ruhmkorf
  • Developer Website
  • Privacy Policy

    • Supports

    • Family Sharing

      Some in-app purchases and subscriptions may be shareable with your family group when Family Sharing is enabled. Learn More