Crumb: Sourdough Tracker
Bread & pizza dough calculator
Only for iPhone
Free · In-App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Sourdough made simple: track your starter, calculate any dough and get a bake schedule that adjusts to your dough temperature. Plus a pizza dough calculator.
Tired of sourdough timing that's always off? Most apps give you fixed steps — but dough rises faster when it's warm and slower when it's cold. Crumb recalculates every step for YOUR dough temperature, so fresh bread is ready exactly when you want it.
TEMPERATURE-SMART SCHEDULE
Tell us when you want the loaf out of the oven. We work backwards through feed -> autolyse -> bulk -> fold -> shape -> proof -> bake, and recalculate every step for your dough temperature. Get a notification for each stage so you never miss a fold.
STARTER TRACKER
Log feedings, watch the rise curve, and get "time to peak" estimates plus feeding reminders. Keep multiple starters healthy and never wonder if yours is ready.
CALCULATORS (FREE)
- Baker's percentage calculator for any sourdough recipe
- Full pizza dough calculator — Neapolitan, New York and Pan styles
- Hydration calculator and handy unit converters
The calculators are free, forever.
CRUMB ANALYSIS
Snap a photo of your loaf and get feedback on crumb, crust and proofing, so your next bake is better than your last.
RECIPES & JOURNAL
Start from proven recipes, then save every bake with photos and notes to build your own baking log.
WHY BAKERS LOVE IT
- No sign-up — open the app and start
- Free calculators with no paywall
- Timing that adapts to real conditions, not fixed steps
- Works for sourdough bread AND pizza dough
Free to start. Bake your best loaf yet.
—
Crumb Pro unlocks unlimited AI crumb scans, multiple starters with smart reminders, the temperature-smart schedule, an unlimited journal and premium recipes.
- Weekly with a 3-day free trial
- Yearly (save ~87% vs weekly)
Payment is charged to your Apple ID. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the period. Manage or cancel in your App Store account settings.
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
What's new:
- New recipes in the library — more sourdough loaves and pizza styles to start from
- Smoother and faster — refined the schedule, timeline and starter screens for everyday baking
- Sharper AI crumb analysis and polished widgets with proofing & bake timers
Thanks for baking with Crumb! Tell us what you'd like next.
The developer, Vadim Semenko, 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 Linked to You
The following data may be collected but it is not linked to your identity:
- Purchases
- Identifiers
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Vadim Semenko
- Size
- 25.7 MB
- Category
- Food & Drink
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 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.
- iPhone
- Languages
English and 14 more
- English, Catalan, Croatian, Czech, Danish, Dutch, Finnish, French, German, Gujarati, Indonesian, Japanese, Portuguese, Russian, Spanish
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Sourdough Pro Yearly $39.99
- Sourdough Pro Weekly $6.99
- Copyright
- © 2026 Vadim Semenko