Project Sourdough vs Crumb
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Project Sourdough
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Project Sourdough is the all-in-one sourdough app that helps you track your sourdough starter, calculate hydration, manage recipes, and bake consistently better bread. Whether you’re maintaining your first starter or refining advanced techniques, this app gives you the tools to understand fermentation and improve every bake. Everything You Need for Sourdough Success • Sourdough Starter Tracker — Log feedings, monitor growth, and set smart reminders so your starter stays healthy and active • Hydration & Ratio Calculator — Instantly calculate hydration percentages, levain amounts, and dough ratios without complicated math • Recipe Manager — Save, organize, and customize your favorite sourdough recipes in one place • Complete Bake Workflow — Plan every stage from autolyse and bulk fermentation to shaping, proofing, and baking • Beginner Courses — Learn sourdough basics with clear, step-by-step lessons designed for new bakers • Community Sharing — Share your bakes, recipes, and tips with other sourdough enthusiasts • Advanced Tools — Precision features for experienced bakers who want full control over fermentation timing and consistency Built for Every Type of Baker From keeping a healthy sourdough starter to running consistent daily bakes, Project Sourdough helps you stay organized, reduce guesswork, and understand the science behind fermentation. Track starter activity, perfect hydration levels, and time every stage with confidence. Why Bakers Love Project Sourdough • Improves fermentation accuracy and reduces failed bakes • Makes sourdough baking more predictable and enjoyable • Helps beginners learn faster while giving experienced bakers better control • Encourages creativity, experimentation, and community connection Project Sourdough is more than a baking app — it’s your personal companion for better sourdough bread, built around passion, precision, and the joy of great loaves.
Crumb
This AI-powered companion analyzes your sourdough bakes, providing feedback on fermentation, crumb structure, and hydration. It helps you track your progress, manage your starter, and offers tools for better bread-making.
- AI crumb analysis for openness and evenness
- Fermentation evaluation (under, well, over)
- Proofing tracker with temperature-aware predictions
- Starter health checks and feeding logs
- Mixing-water calculator
- Photo-first baking journal
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Better Bread Through Better Feedback Crumb is your AI sourdough companion — from feeding your starter to reading the crumb. Snap a photo of any loaf and get instant feedback on fermentation, crumb structure, hydration, and overall bake quality, then track every loaf in a beautiful baking journal. AI Crumb Analysis • Analyze crumb openness and evenness • Evaluate fermentation — under, well, or over • Spot common baking issues • Get specific, next-bake recommendations • A tasting-note scorecard for every loaf Proofing Tracker • Time bulk fermentation and final proof • Temperature-aware "ready around" predictions • Cold-retard and out-of-the-fridge modes • Snap a photo mid-proof for an instant "is it ready?" read Starter Coach • Log feedings and see when your starter will peak • Photograph it for an AI health check • A from-scratch starter guide for beginners Baker's Tools • Mixing-water calculator to hit your target dough temp • Recipe vault for your formulas, hydration, and notes Your Baking Journal • A complete, photo-first history of your bakes • Track your score, best crumb, and streak over time • Nickname and favorite your proudest loaves • Ask the AI coach anything about a specific bake Built for Serious Home Bakers Whether you're baking your first country loaf or refining competition-quality sourdough, Crumb helps you understand and improve every bake. Download Crumb and turn every loaf into a learning opportunity. Terms: https://www.zencodex.io/apps/crumb/terms
Screenshots
Verdict
The clearest difference is ads: Crumb at none against Project Sourdough's shown. Crumb also leads on update cadence (every 5 days vs fortnightly). Project Sourdough's advantage is iOS requirement (15.0.0 vs 17.0). On price, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Project Sourdough sells 1 one-off in-app purchase and Crumb sells 4 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.
Project Sourdough ships an update fortnightly, Crumb every 5 days. The most recent releases landed on October 18, 2026 and October 23, 2026 respectively.
| Parameter | Project Sourdough | Crumb |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (2 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 2 — better |
| Update frequency | Fortnightly | Every 5 days — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | — | Freemium |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.0.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 70 MB | 19 MB |
| Age rating | 4+ | 4+ |
| Developer | Jonas Holgersson | Zenmonkeys Digital LLC |
In-app purchases
Project Sourdough
- Premium Upgrade$49.99
Crumb
- Crumb Pro$4.991 Month
- Crumb Pro (Annual)7 Days trial$34.991 Year
- 3 Scans$0.99
- 15 Scans$3.99







