Join the beta →

Keep your starter alive.

Crum is an iPhone companion for your sourdough starter — reminders that match how you actually bake, honest health readings, and answers when something smells off.

iOS only, for now. One email when the beta opens — nothing else.

Programs

Tell it what you're doing

Starting fresh, reviving one, baking weekly, or just keeping it alive — Crum shapes the whole care routine around your answer.

Crum's program card: Active selected among four programs, next feed in 12 hours
Crum's status card: Strength, Yeast and Bacteria bars, with approx labels on the inferred readings

Status

Readings that admit what they are

Three bars track how it's doing. Where a reading is inferred rather than measured, the label says approx — Crum never claims to know what it can't.

Feeding

Two taps, then back to your day

Log a feed in two taps. Reminders fire on your starter's actual cadence, and go quiet when you're away.

Crum's feed sheet: ratio and flour chips, one log feed button

Baking soon? Get in line.