An estimate that learns
After each feeding, Sourpeak estimates when your starter will peak. Tell it “At its peak”, “Not yet” or “Already falling”, and the next estimate gets closer to your starter.
Pick a ratio, see its peak
Every feeding ratio shows its own peak time, so you can choose the one that fits your day and your sleep.
A countdown on your Lock Screen
See how long until the peak without unlocking your phone, and get an alert when your starter is ready.
Plan your bake day Sourpeak Pro
Choose when your bread should come out of the oven. Sourpeak works back through every step, from feeding to baking, with a notification at each one.
Every step, right on time.
Your bake day plan uses your starter’s own pace and your kitchen temperature. Steps that would fall while you sleep are marked, so you can move the day before it starts.
Sourpeak Pro is a one-time purchase inside the app. It adds backward planning, bake days, unlimited starters, a dough calculator and widgets.
No account. No ads. No subscription.
Your starters, feedings and plans stay on your iPhone. See the privacy policy.