Levain: Sourdough Diary

Your sourdough starter deserves better than a sticky note on the fridge.

Levain is the simplest way to track every feeding, build consistency, and never lose a great recipe.

• Log each feed in seconds: flour, water, temperature, rise % and photo attached
• Build your streak with a 30-day ring that rewards showing up every day
• 50 community formulas with baker's math built in: scale any recipe to any loaf size instantly

Built for the sourdough community. Whether you're nursing your first starter or juggling three at once, Levain keeps you consistent.

Levain Pro unlocks unlimited starters, the full 50-formula library, and crumb photos. One-time purchase. No subscription, ever.

Your data lives entirely on your device. No account required. No cloud. No tracking.