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Crumb — Baker's Math

Sourdough & bread calculator
Sangwon Kim · Food & Drink
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App info

Developer
Sangwon Kim
Category
Food & Drink, Utilities
Released
Oct 14, 2026
Version
1.0.0 (Oct 14, 2026)
Price
Free
Size
25.6 MB
Requires
iOS 13.0
Age rating
4+
Languages
English and Korean

In-app purchases

Crumb Pro$3.99
Current prices, App Store US.
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Release date

The release date was moved 1 time before launch.

About Crumb — Baker's Math

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…
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