Your sourdough starter is alive.
Boulie is the sourdough starter tracker that gives your jar a face, a mood and a voice — scan it, and AI tells you the moment it's ready to bake.
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Boulie is the sourdough starter tracker that gives your jar a face, a mood and a voice — scan it, and AI tells you the moment it's ready to bake.
Feedings, rise, temperature, time — everything you log becomes his mood. Hungry means feed me. Peaked means bake now. You'll just know.
Snap a photo. Boulie's AI reads the rise percentage straight from the glass — no rubber bands, no marker lines.
Rise %, time-to-peak and doubling speed, tracked over every feed. Your starter's rhythm, learned.
The moment it peaks, you'll know — with a notification and one very excited jar.
The float test lies — high-hydration starters sink while perfectly active, tired ones float anyway. The truth is in the rise. Boulie watches your jar peak, learns how your starter behaves at your kitchen's temperature, and tells you the moment to bake. Peak fermentation, every time.
Any ratio, any flour, any batch. Baker's math without the math.
Tuned to your starter's actual rhythm and your kitchen's temperature — fridge mode included.
Photos, crumb shots, notes and ratings. Every loaf remembered, every bake better.
Pancakes, pizza, focaccia, starter birthdays — Boulie celebrates every bake, not just the boules.
At its peak: roughly doubled, domed and full of bubbles — before it starts to fall. Boulie reads the rise from a photo of your jar and pings you at the peak, so you bake at maximum power instead of guessing.
No — it's famously unreliable. High-hydration starters can fail it while perfectly ready, and over-ripe starters can pass. Rise-tracking in the jar is more accurate, which is exactly what the scan does.
Room temperature: usually every 12–24 hours. Fridge: about weekly. Boulie learns your starter's actual pace and reminds you at the right time — and never guilts you when life happens.
100% hydration (equal flour and water by weight) is the happy default. The built-in hydration calculator handles any ratio and scales any recipe to your batch.
Starters are tough — weeks-of-neglect tough. Boulie might get dramatic about it, but one good feeding and he's back to his bubbly self. Guilt-free, always recoverable.
Coming soon to iPhone. Join the waitlist and be first in when the jar opens.