Ultra Baker

Sourdough, calculated.

Free · Designed for iPad. Not verified for macOS.

Ultra Baker is a sourdough baker's percentage calculator built around how real baking works. Pick the loaf weight you want — it scales total flour, water, salt, and a two-stage starter in real time. TWO MODES • Beginner — pick how many loaves and bake. 1200g loaves, 67% hydration, two-stage starter. The numbers just appear. • Pro — tune hydration (55–85%), salt, starter %, old-starter carry-over %, starter hydration with a "Link to dough" toggle, starter proof time, and a flour blend with as many flours as you want — sliders that always rebalance to 100%. A BAKE-DAY TIMER THAT MAKES SENSE Eight phases from "build starter" to "rest before cutting", each with the right time and oven temperature. Once you press start, the timer keeps running and pings you for each step transition — even with the app closed. Lock-screen Live Activity and Dynamic Island show the active phase and countdown without unlocking your phone. Manual prev/next phase navigation if you want to skip ahead or step back. A STARTER GUIDE BUILT IN Tap the book icon for a step-by-step starter guide — Beginner shows the recipe (1:1 by weight, 1/3 forward, 5–7 days to ready); Pro adds the science (yeast vs. lactic acid, fridge math, float test). NO ACCOUNTS. NO ADS. Recipes save on your device. Nothing leaves your phone. No signup, no email, no tracking. OFFLINE-READY Works without a network. Calculate on a plane, bake at the cabin. WHY A CALCULATOR? Most sourdough recipes give you one fixed loaf at one fixed hydration. Real baking is percentages: change the loaf weight or push the hydration and everything else has to change with it. Ultra Baker does that math in one step so you can spend the time at the bench, not the spreadsheet. DESIGNED FOR HOME BAKERS, BUILT BY ONE Made by a baker who got tired of redoing the math every weekend. Free. Stays free.

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• Apple Watch app — see phase, countdown, and "Fed it" / "Next phase" controls on your wrist. The lock-screen Live Activity extends to your Apple Watch face. • Recipe library — save your bakes as named recipes (Country loaf, Pizza dough, Pain de campagne). Switch between them in one tap, each with its own emoji and bake count. • First-launch onboarding — a quick 4-slide tour for new bakers. • Norwegian and Swedish localizations. • Smarter launch — the app now opens to your last active recipe's settings, not a generic state. • Multi-timer — run multiple bakes plus a bench and fridge starter at the same time, each with its own lock-screen Live Activity.

The developer, PER MAGNE HELSETH, 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

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

    Seller
    • PER MAGNE HELSETH
    Size
    • 2.1 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.
    • Mac
      Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 1.0 or later.
    • Apple Watch
      Requires watchOS 10.0 or later.
    Languages
    English and 2 more
    • English, Norwegian Bokmål, Swedish
    Age Rating
    4+
    Copyright
    • © 2026 Per Magne Helseth