Crumb — Baker's Math
Not claimedBaker's percentages, total hydration and water temperature, worked out as you type
By Sangwon Kim · Food and drinkWhy we expect it: A focused, well-described niche calculator with clear value for bakers, thoughtful features, and a fair free tier.
In short
Crumb - Baker's Math is a formula calculator for sourdough and home bakers. It converts between baker's percentages and grams, computes total hydration including levain and wet add-ins, and works out water temperature for a desired dough temperature. Its one standout feature is that it keeps formulas on the device with no account required.
Summary by Debuts, based on the App Store listing.About
Baker's percentages, total hydration and water temperature, worked out as you type.
Crumb is a formula calculator for sourdough and home bakers. Enter a formula in grams or in percentages, and the other column updates as you go.
■ Features • Baker's percentages and grams, editable in either direction • Total hydration that counts the water in your levain and in wet add-ins such as egg, milk, butter and honey • Prefermented flour percentage, pinned at the top of the formula • Scale a batch by number of pieces and piece weight, or by total dough weight, with an optional loss percentage • A measuring sheet in grams, ounces or pounds • Water temperature for your desired dough temperature (DDT), with hand and mixer friction presets • Celsius or Fahrenheit
■ Free The whole calculator and 3 saved formulas. A banner ad appears on the formula list only. The formula editor and the water temperature screen have no ads.
■ Crumb Pro (one-time purchase) • Unlimited saved formulas, plus Duplicate • Share the measuring sheet as an image • No ads
Pro is a single purchase, not a subscription. You can restore it on other devices signed in with the same Apple Account.
■ Just the math Crumb calculates and nothing else: no timers, no reminders, no account. Your formulas stay on your device.
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