Plan

Plan your bake

Choose a recipe, set your kitchen temperature, and get a realistic formula and bake plan.

I'm a…

When do you need this loaf?

New to sourdough? Read this once.

Loaf Logic plans your bake by biology, not the clock. Plan picks a recipe and gives you exact gram weights. Starter tells you when to feed your sourdough so it peaks at mix time. Timeline runs a live timer through every step. Method walks you through the technique. Diary keeps a log of your bakes.

Two words you'll see a lot: Levain — the small jar of bubbly starter you build for this bake. Target rise — how much your dough should grow during bulk fermentation (40% means it's noticeably puffy but not doubled).

Total dough

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Target rise — Ready — Hands-on —

Target rise = how much your dough should expand during bulk. Ready = when the loaf is cool enough to slice. Hands-on = time you're actually working the dough — the rest is waiting.

What if…? See how hydration & kitchen temperature change this bake.

Timings are pulled live from your current recipe’s plan — change the recipe, hydration, or kitchen temperature and these update. Watch the dough, not just the clock.

Water temp calculator What water temperature should I mix with? Hit your target dough temp every time.

Cool or warm your mixing water to land on a consistent dough temperature — the biggest lever for predictable fermentation. Enter what you can measure; anything left blank uses your kitchen temperature.

Target dough temp °C Room / kitchen °C

Flour temp °C Levain / starter °C

How are you mixing? (friction heat)

Reverse — I used water at °C

Loaves

112

Size / loaf

2502000

Kitchen temp

1434

Weight

Temperature

Recipe

Starter

More starter options

Available g Keep back g

Schedule

Overnight cold proof

Cold hours

Using defaults

Extra ingredients (baker's %)

Add mix-ins like cheese, olives, or seeds. Scales automatically with total flour.

Formula & weights

Timing confidence

Dough weights

Log this bake

Capture today's formula so you can rate and compare it later.

Advanced controls

These controls unlock when you customize a recipe — tap Customize on the recipe card above to edit hydration, flour blend, salt, starter details, and dough temperature.

Share or export

Share URL

Starter & Levain

Starter & Levain Calculator

Build exactly the amount of starter or levain you need, then tune hydration, timing, and feeding ratio without doing baker's math by hand.

Build amount

Desired output

Handling loss0 g

Extra for handling loss

Optional buffer for what sticks to the jar or spatula.

Hydration

Inoculation

Temperature78°F

Temperature

°F

Used only for the estimated ripeness window. Your starter may vary.

Feeding ratio starter : flour : water

Build result

Advanced

Seed hydration · timing · blend · recipe impact · saved builds

Account for starter hydration

Account for flour and water inside the seed starter

Timing helper

Flour blend

Split the fresh flour by type

Recipe impact

Final dough flour Final dough water

Salt Loaves

Saved builds

Preset name

Ready-by feeding planner

Mix at Seed starter

My starter

About Loaf Logic

Loaf Logic plans sourdough by the biology of fermentation, not by a generic clock. Tap the tabs below the screen to move between Plan, Starter, Timeline, Method, and Diary.

What does the feeding planner actually do?

You tell it when you want to mix dough and how warm your kitchen is. It picks a seed:flour:water ratio so your starter peaks right at your mix time — not an hour too early or three hours too late.

What's the "target rise" number?

It's the Two-Factor Method target: a linear relationship between dough temperature and how much the dough should grow during bulk fermentation. Warm dough wants ~20% rise because it'll keep fermenting while it cools. Cool dough wants 75%+ because it won't.

How does the live timer work?

Tap Start the bake on the Timeline tab and the planner switches to Live mode. In the Android and iOS app, every remaining step is scheduled with your phone's alarm system, so alerts arrive even with the screen locked or the app closed. In a browser, keep the tab open — the chime and notification fire from the page. A countdown stays on the current step, the mini-bar follows you across tabs, and pause/shift/skip re-schedule everything — your bake survives a full reload or reboot.

Can I save my own recipe?

Open Advanced controls → Custom recipe on the Plan tab, tune the numbers to match your go-to formula, and tap Save. It lives in your browser only — no account, no cloud.

Does the bake plan work without a cold proof?

Yes. Toggle Overnight cold proof off in the Plan → Schedule card and the planner switches to a same-day final proof without breaking any other step.

What about metric vs imperial?

Use the Weight and Temperature controls at the top of Plan. The default is grams plus °F; internally the formula still stays in grams and Celsius.

Made for the kitchen. No account, no tracking, no ads. Feedback welcome.

Settings

Feed-your-starter reminder A gentle on-device notification when your starter is due for its next feed. Offline, no account, no tracking. Off by default. Production mode Run several named bakes at once — a board of concurrent labeled timers for baking in batches. Off by default; turning it off never deletes a bake. Still offline, no account. Vibration & haptics Little confirming buzzes on taps, timers, and finished bakes. On by default.

Market stand (kiosk)

Turn this screen into a self-serve order station for a tablet at your stand. Customers pick from your menu and leave a first name — each order lands in your Orders list. Exit is PIN-protected.

Your data

Everything lives only on this device — no account, no cloud. Save a backup file you keep somewhere safe, and restore it on a new phone or after a reinstall.

No account, no tracking, no ads — free forever.

✨ What Loaf Logic can do

The whole bakery toolkit, from first loaf to market day. Tap any card's hint to find it.

🫙Starter & levain, sized exactly

Build just the amount you need, with ripeness timing for your kitchen's temperature.

Starter tab — the home screen

⏱️A bake timer that survives anything

Every step is a real alarm on your phone — it rings even if the app is closed or the phone reboots.

Plan a bake, then Timeline → Start

🍞Several bakes at once

Production mode gives every batch its own named timer lane, and plans your whole day backwards from a deadline.

Settings → Production mode

📋Orders & standing bakes

Log orders, see the week's demand at a glance, and text customers ready-made updates — from your own number, nothing stored.

Timeline → Orders & week panel

💳Sell & get paid at the stand

Ring up walk-up sales on the Sell register — cash with change math, Stripe/Venmo QR, or your card reader's app — and see the day's takings split by payment type at pack-down.

Timeline → 🧾 Sell (Production board)

🏷️Real cottage-food labels

Ingredient statements, allergens, and your state's required wording — printed 4×6 for a thermal label printer, with your own artwork.

Timeline → Labels panel

🧺A market-stand kiosk

Turn a tablet into a self-serve order station: your logo, loaf photos, payment QRs — and each order queues its labels for printing.

Settings → Market stand

📔A bake diary with photos

Log every bake with its exact formula, rate it, compare two side by side, and re-bake the winner in one tap.

Diary tab

💾Yours, on your device

No account, no cloud, no tracking — ever. One backup file carries everything (photos included) to a new phone.

Settings → Your data

When do I start?

Step 1 of 3

When do you want fresh bread?

Pick a time and we'll work backward to the exact minute to mix your dough.