Sourdough Tracker - Crumb
Artisan Baker & Starter Log
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
AI Bake Coach fixes your loaf problems in seconds. 30+ recipes, wild yeast starter tracker & bake journal.
Crumb is your complete sourdough companion - the app that turns a demanding craft into a daily joy. Whether you're nurturing your first starter or perfecting your hundredth loaf, Crumb keeps you on track from flour to crust.
STARTER TRACKER
Your sourdough starter is a living culture, and Crumb treats it that way. A beautiful health ring shows your starter's vitality at a glance - fed, hungry, or peaked. Set custom feeding schedules and Crumb reminds you before your wild yeast culture goes hungry. Track feeding history, hydration ratios, and streak days to build consistency and understand what makes your culture thrive. Never lose a starter to neglect again.
AI BAKE COACH
Not sure why your loaf didn't rise? Crumb's AI Bake Coach answers in seconds. Describe what went wrong - dense crumb, gummy center, pale crust - and get expert, personalized troubleshooting tailored to your dough and conditions. It's like having a master artisan baker in your pocket.
RECIPE LIBRARY
Crumb ships with 30 expertly crafted recipes spanning beginner to advanced - from a classic country loaf to high-hydration baguettes and whole-grain miche. Every recipe is written by bakers, for bakers, with clear rationale behind each step. Pro subscribers unlock the full premium library: seasonal specials, heritage grain formulas, enriched loaves, and more - updated regularly.
STEP-BY-STEP BAKE SESSIONS
Baking sourdough demands precision and timing. Crumb's guided bake sessions walk you through every stage: autolyse, bulk fermentation, stretch-and-fold intervals, shaping, proofing, and baking. Built-in timers fire at exactly the right moment. Your hands stay in the dough, not on your phone.
BAKE JOURNAL
Every bake tells a story. Log your results with photos, star ratings, hydration level, and free-form notes. Over time your journal becomes your personal bread tracker - spot patterns, refine techniques, and watch your bakes improve bake by bake. Search past bakes by date, recipe, or star rating.
CRUMB PRO
Unlock the full Crumb experience:
- Full premium recipe library (30+ recipes and growing)
- AI Bake Coach: expert troubleshooting for every bake problem
- Advanced starter analytics: fermentation curves and trend charts
- Unlimited bake journal entries with full-resolution photos
- Priority support
Plans: $4.99/month or $39.99/year. Cancel anytime.
DESIGNED FOR BAKERS
No clutter, no noise - just the tools you need. Warm, editorial design that feels as good as a well-worn recipe book. Works offline.
Download Crumb and bake the best bread of your life.
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
• AI Bake Coach — Expert AI troubleshooting in the Bake tab (Pro)
• 30-Recipe Library — 30 expertly crafted recipes from beginner to advanced
• Starter Insights — Track your starter's health trend over time (Pro)
• Journal Search — Search and filter past bakes by name or rating
• Create Your Own Recipes — Add and save your personal recipes
• Bug fixes and improvements
The developer, Karol Jaworski, 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 Linked to You
The following data may be collected and linked to your identity:
- Purchases
- Contact Info
- User Content
- Identifiers
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Karol Jaworski
- Size
- 10.9 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
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Annual $39.99
- Monthly $4.99
- Annual (Intro Offer) $39.99
- Copyright
- © 2026 Karol Jaworski