Sourdough Tracker: Starter Log

Crumb is a sourdough starter tracker and baking companion for home bakers who love the ritual of making real, artisan bread.

Log your daily starter feedings, learn when your sourdough starter peaks, time every phase of your dough, and keep a record of every homemade loaf in one place. Whether you are nurturing your very first starter or baking weekly for family and friends, Crumb keeps a clear history of your bread making: feedings and discards, dough preparation steps, your go-to baking recipes, and timers from autolyse through the final bake.

By tracking your own process you start to understand fermentation timing, hydration ratios, proofing windows, and how small adjustments shape the final crumb.

FREE
• Sourdough starter tracker: one starter with a feeding timeline. Log every feeding and discard, and watch its activity build up.
• Bread baking log: record up to 2 bakes with recipe notes, observations and dough preparation details.
• Recipe keeper: save one bread recipe, bread machine recipes included, to come back to whenever you bake.
• Feeding calculator: the starter, water and flour ratio maths, on its own tab.
• Bulk fermentation calculator: estimate bulk timing from your dough temperature.
• Kitchen bake timers: autolyse, bulk fermentation, proofing and the bake itself.
• Your data is yours: export starters, bakes and recipes to CSV at any time, free on every plan.

CRUMB+
• Unlimited starters, bakes and recipes.
• Kitchen Mode: a large-type, hands-free companion for floury fingers. It walks you through any saved recipe step by step, runs a starter feeding helper, and keeps the screen awake.
• Live bake tracking: follow your loaf phase by phase while it bakes, without unlocking your phone.
• Peak-time predictions: Crumb learns when your starter peaks from your own temperature and feeding history, then tells you when the window is open.
• Feeding reminders: a nudge when each starter is due.
• Feeding ratio and temperature logging: the exact ratio and dough temperature behind every feeding.
• Sourdough hydration calculator: water, levain, flour and salt weights from any formula, with a built-in sourdough bread calculator.
• Bake and starter photos: every stage of your loaf, from the bubbly rise to the final scoring, plus a photo of your jar on the starter profile and on any single feeding.
• Bake rating and scoring: crust, crumb, ear, flavour and rise.
• Bake statistics: hydration trends, flour usage and baking frequency.
• Feeding streaks and milestones.
• Recipe Box: import a curated library of tested sourdough recipes.
• Share cards and bread reports: shareable cards of your proudest bakes, and a full bread report as a PDF.

No account. No ads. No analytics. Your baking records stay on your device.

Crumb+ is available weekly, monthly, yearly, or as a one-time Lifetime purchase. A 3-day free trial is offered on the Monthly and Yearly plans. Prices are shown in the app before you buy.

Bake, learn, improve. One loaf at a time.

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