Sourdough bake-day planner that works back from when you want bread

The problem

Sourdough takes a day or more from feeding the starter to baking, and every step depends on kitchen temperature. Home bakers work out the timeline on paper or in their heads, then miss a fold or over-proof the dough. Most sourdough apps focus on logging the starter, and only a few new ones plan the whole bake day.

For: Home sourdough bakers · Beginners with a new starter · Cottage bakers planning batches

Why now

Loaflo, a sourdough starter app launched in October 2024, has drawn 518 App Store ratings, and a reverse-time bake scheduler only appeared on the App Store in May 2026, so the bake-day niche is still early.

Demand signals

Monthly Google searches in the US, pulled 2026-09-24. These are the words people with this problem actually type.

• sourdough starter feeding schedule3,600
• sourdough calculator2,400
• sourdough app110
• sourdough starter tracker40

What exists already

• Loaflo: Sourdough Starter ↗Leading starter app with AI loaf feedback and calculators, including a rise forecast; its focus is the starter, not a timed bake-day plan.
• Sourdough Schedule: Bake Timer ↗Closest match: works backward from bake time with step reminders; launched May 2026 with no ratings yet.
• Sourdough Starter Tracker ↗Pay-once starter log with feeding reminders, safety alerts and a pre-bake checklist.

MVP scope

1. Pick a finish time; the app schedules feed, levain, mix, folds, shape, cold proof and bake
2. Step timings that adjust to the kitchen temperature you enter
3. Reminders with lead times, plus a one-tap 'running late' reschedule
4. Starter feeding log with rise notes
5. Baker's-percentage calculator for scaling recipes
6. Android, iOS and web