SourdoughGuru vs S.D Timer Pro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SourdoughGuru
This app uses AI to help you improve your sourdough baking. Track your starter, log bakes, analyze your results from photos, and get personalized feedback to achieve better bread with every attempt.
- AI-powered baking analysis
- Starter feeding log and reminders
- Detailed bake logs and photo history
- Custom recipe creation and AI-generated recipes
- Instant crumb analysis from photos
- Step-by-step baking guidance
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**Better sourdough starts with understanding your last bake.** SourdoughGuru helps you plan a bake, follow each step, and learn from the result. Photograph your crumb for AI-powered feedback, compare attempts to see what changed, and keep your recipes and baking history together. **PLAN AROUND YOUR DAY** Choose when you want your bread ready. SourdoughGuru builds a step-by-step schedule backwards from that time, with estimates based on your kitchen temperature. **STAY WITH YOUR DOUGH** Follow guided baking steps with timers and reminders for folds and other key moments. Record temperatures, rise, notes, and photos as you bake. **LEARN FROM EVERY LOAF** Take a photo of your crumb to explore its structure and get practical ideas for your next bake. Compare attempts side by side to spot changes in timing, temperature, rise, and results. **KEEP YOUR BAKING IN ONE PLACE** Create and scale recipes with baker’s percentages, track starter feedings and activity, and revisit the details of past bakes. **SHARE WHAT YOU MADE** Turn a finished bake into a Loaf Card you can share with friends, along with a link to the recipe so they can bake it too. Sourdough takes practice. SourdoughGuru helps you make each bake count. Terms of Use: https://storage.googleapis.com/sourdough-guru-prod-assets/legal_statements/terms_of_use.html Privacy Policy: https://storage.googleapis.com/sourdough-guru-prod-assets/legal_statements/privacy_policy.html
S.D Timer Pro
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S.D TIMER Pro computes the exact feeding schedule for your sourdough starter, working backward from your target ready time to give you a precise feed time and gram-level recipe. HOW IT WORKS Enter six parameters: target ready time, quantity of starter needed (grams), desired hydration percentage, flour type, starter activity level (%), and ambient temperature (°C or °F). The app applies a fermentation kinetics model that factors temperature-dependent metabolic rates of lactic acid bacteria and wild yeast to calculate when your starter will hit peak activity. OUTPUT — YOUR FEEDING PLAN • Feed time: the exact moment to feed so your starter peaks on schedule • Starter / flour / water quantities in grams • Feed ratio (e.g., 1:9.8:9.8) • Estimated peak pH • Predicted flavor profile (mild, balanced, tangy, complex) • Recommended bread types suited to the resulting starter profile • Fermentation timeline chart with 80% activity window marked Set process alarms directly from the results screen to get notified at feed time and at peak. DESIGNED FOR PRECISION Temperature has a nonlinear effect on fermentation speed. A 5°C difference between summer and winter kitchens can shift peak time by 2–4 hours. S.D TIMER Pro accounts for this so your timing stays consistent regardless of ambient conditions. Supports both Celsius and Fahrenheit. Works across all flour types including whole wheat, rye, spelt, and einkorn. Starter activity input lets you calibrate for your specific culture's behavior. PROFESSIONAL & HOME BAKERS Built for bakers who want repeatability and data-driven control over their sourdough process. Used by professional bakery instructors for workshop demonstrations and planning. No login required. Works offline once loaded.
Screenshots
Verdict
The clearest difference is in-app purchases: S.D Timer Pro at none against SourdoughGuru's 3. S.D Timer Pro also leads on update cadence (daily vs every 5 days). On price, ads, device support and iOS requirement 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. SourdoughGuru sells 3 in-app purchases, starting at $7.99 per month. S.D Timer Pro asks for nothing beyond the download.
SourdoughGuru ships an update every 5 days, S.D Timer Pro daily. The most recent releases landed on October 14, 2026 and September 23, 2026 respectively.
| Parameter | SourdoughGuru | S.D Timer Pro |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 5 days | Daily — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Freemium | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 99 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Gil Leibovitz | oran kamelgarn |
In-app purchases
SourdoughGuru
- SourdoughGuru Premium$7.991 Month
- SourdoughGuru Premium$29.991 Year
- SourdoughGuru Premium$59.991 Year
S.D Timer Pro
No in-app purchases









