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.
- Bulk Fermentation Time CalculatorEstimate a sourdough bulk fermentation window from dough temperature, starter percentage and starter activity. Use the result as a prompt to read the dough, not as a fixed finish time.
- Sourdough Bread Internal Temperature GuideChoose a loaf style and flour composition, then enter the measured center temperature to see the relevant sourdough bread internal temperature range and an interpretation.
- Sourdough Bread Timeline PlannerBuild a backwards-planned sourdough bread timeline from starter feeding through mixing, folds, bulk fermentation, shaping, proofing and baking.
- Sourdough Fermentation ChartUse your dough temperature, starter percentage and dough size to build a practical sourdough fermentation chart with a range rather than false precision.
- 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 Proofing ChartEstimate a room-temperature or cold-proof window from proofing temperature and starter percentage, then check the dough's rise, shape and bubbles.
- Sourdough Starter Feeding Schedule PlannerBuild a dated sourdough starter feeding schedule with expected refreshes and a visual readiness window.
- Sourdough Starter Feeding CalculatorWork out how much to feed sourdough starter for a chosen amount or your next bake. Get grams of starter, flour and water, plus discard.
- 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.
- Sourdough Starter Grams to Cups ConverterHow many grams is 1 cup of sourdough starter? Use this approximate converter for cups, grams, hydration, and the flour and water your starter contains.
- Sourdough Starter Name GeneratorGenerate a shareable batch of sourdough starter names by vibe, flour type and starting letter. Re-roll or copy your favourites in one click.
- Sourdough Starter Peak Time EstimatorEstimate when a mature sourdough starter may peak from its feeding ratio, ambient temperature and feeding time, then check the visual cues that matter more than the clock.
From the blog
All articles →- How to make sourdough starter from scratch, day by dayHow to make sourdough starter from scratch in 14 days — what happens in the jar each day, why the day-3 bubbles lie, and how to know it's ready to bake.
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- Best 9 Bread Planner Alternatives in 2026: Rise to Better BakingSearching for bread planner alternatives? We compare 9 baking apps on scheduling flexibility, hydration calculators, watch support, and scoring rules to find your fit.
