Sourpeak: Sourdough Starter
Peak timer & bake planner
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Log a feeding and see when your starter will peak. Answer one question at the peak, and every estimate gets closer to your own starter.
Know when your sourdough starter will peak, and bake on your own schedule.
Sourpeak learns how fast your starter rises. Log a feeding and it shows when the starter will peak, how long is left and the window when it is ready to use. Near the peak it asks one quick question: at its peak, not yet, or already falling? Each answer teaches it your starter's pace, so the next estimate gets closer.
PICK A RATIO, SEE ITS PEAK
Every feeding ratio shows its own peak time before you feed. Choose 1:1:1 for a quick rise, or a higher ratio so it peaks after work or in the morning. Times that fall while you sleep are marked.
ON YOUR LOCK SCREEN
A live countdown to the peak on your Lock Screen and in the Dynamic Island, and an alert when your starter is ready. Feeding reminders at the times you choose: daily for a starter on the counter, weekly for one in the fridge.
PLAN YOUR BAKE DAY (SOURPEAK PRO)
Choose when your bread should come out of the oven. Sourpeak works back through every step: feed, mix, bulk ferment, shape, proof and bake, at your starter's pace and your kitchen temperature, with a notification at each step. You can also plan just the levain: say when you need it, and Sourpeak tells you when to feed and at which ratio.
ALSO IN SOURPEAK PRO
• Unlimited starters
• Dough calculator with baker's percentages
• Home Screen and Lock Screen widgets
Sourpeak Pro is a one-time in-app purchase. No subscription.
A GUIDE FOR EVERY STAGE
Twelve short chapters: starting from scratch, reading the peak, a fridge routine, milder or more sour bread, baking with your starter and more.
PRIVATE BY DESIGN
No account, no ads, no analytics. Your starters, feedings and plans stay on your iPhone.
In English, German and Turkish.
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The developer, ONUR YAVUZ, 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 Collected
The developer does not collect any data from this app.
Accessibility
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Information
- Seller
- ONUR YAVUZ
- Size
- 5.9 MB
- Category
- Food & Drink
- Compatibility
Requires iOS 18.0 or later.
- iPhone
Requires iOS 18.0 or later. - Mac
Requires macOS 15.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 2.0 or later.
- iPhone
- Languages
English and 2 more
- English, German, Turkish
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Sourpeak Pro $9.99
- Copyright
- © 2026 Yaveez