iPhone & Apple Watch · Free
The Ultimate Sourdough Starter Tracker App in 2026
Sourdough Tracker: Crust is the free sourdough starter tracker and feeding reminder for iPhone. Add your starter, tap "Fed!" when you feed it, and get a gentle reminder when it's time again — no dead starters, no guessing.
Features
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Track multiple starters
Add as many starters as you keep, each with its own custom name and icon, so you always know which is which.
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One-tap feeding
Just hit "Fed!" when you're done. No forms, no notes to type — the feed is logged in a single tap.
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Countdown to the next feed
A countdown timer shows exactly when the next feeding is due, so you're never guessing when you last fed it.
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Push notification reminders
Get a gentle push notification when it's time to feed, so a starter never slips your mind and dies.
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Full feeding history
See your complete feeding history at a glance and keep an eye on how each starter is doing over time.
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Pause when you're not baking
Taking a break from baking? Pause a starter so it stops reminding you, and resume whenever you're back.
Screenshots
Give each starter a custom name and icon, and watch a cute mascot grow with every feeding. Setup takes about 30 seconds.
Push notifications remind you when a feeding is due, and your full feeding history is there at a glance whenever you want to look back.
How it works
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Set up your starter
Add a starter, give it a custom name and icon, and you're ready in about 30 seconds.
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Tap when you feed it
Hit "Fed!" each time you feed. The app logs it and starts a countdown to the next feeding.
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Get reminded
A push notification lets you know when it's time to feed again, so your starter stays alive and thriving.
FAQ
Frequently asked questions
Is Sourdough Tracker free?
Yes. The app is free to download and use.
Can I track multiple starters?
Yes. You can add multiple starters, each with its own custom name and icon, and track them all side by side.
Does it send reminders when it's time to feed?
Yes. The app shows a countdown to the next feeding and sends a push notification when it's due, so you never miss a feed.
How do I log a feeding?
Just tap "Fed!" when you're done feeding. It's one tap — the app records the feed and resets the countdown for you.
Can I see my past feedings?
Yes. Your full feeding history is kept in the app, so you can see at a glance when each starter was last fed.
What is the mascot?
Each starter has a cute mascot that grows with every feeding — a little visual reward for keeping your starter happy and well fed.
Can I pause a starter when I'm not baking?
Yes. You can pause any starter when you're taking a break from baking, so it stops reminding you, and resume it whenever you're ready again.
Does it work offline, and is my data private?
Yes. The app works on your device, so you can log feedings and check your starters without needing an internet connection.
How long does it take to set up?
About 30 seconds. Add a starter, give it a name and icon, and you're tracking feedings right away.
Does Sourdough Tracker work on iPad?
Yes. It's a universal app that runs on both iPhone and iPad.
Never lose a starter again.
Download Sourdough Tracker, tap "Fed!", and let the app remind you when it's time.
Free Sourdough tools
- Baker's Percentage CalculatorEnter flour and other ingredient weights to get baker's percentages, totals and an optional rescaled recipe for your target dough weight.
- Sourdough Hydration CalculatorFind your true dough hydration, not just water divided by recipe flour. This calculator includes the flour and water already in your starter.
- Sourdough Starter Feeding Ratio CalculatorUse a feeding ratio and target hydration to calculate the grams of starter, flour and water to combine, plus total weight and discard.
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