🍞 Sourdough, simplified

Better sourdough, every bake.

Recipe calculator with baker's percentages. Nine bake phases with timers and alarms. Claude AI photo coach for your starter, dough and crumb. Works on web, iOS and Android.

Coming soonApp Store Coming soonGoogle Play
12k+
Active bakers
4.9★
App Store rating
9
Bake phases tracked
3
Platforms, one login
Features

Everything a sourdough baker needs.

Built for kitchen reality. No more flipping between recipes, calculators and timers.

⚖️

Smart calculator

Baker's percentages done right. Pick hydration, salt, starter ratio. Auto scales for any number of loaves.

⏱️

Live bake phases

Nine guided phases with countdown timers and alarms. From feed to final rest, no step missed.

🤖

Claude AI coach

Ask anything. Live answers from Claude tuned for sourdough. Context aware to your current bake phase.

📸

Photo analysis

Snap your starter, dough or crumb. Claude vision analyzes fermentation and gives specific feedback.

🌾

Custom flour blends

Mix any ratio. Rye, spelt, einkorn, ancient grains. Separate blends for starter and main dough.

📋

Bake history

Every bake logged. Hydration, flour blend, notes and outcome. See what worked, repeat what won.

How it works

Four steps from flour to crumb.

UltraBaker walks you through the entire bake. Set it once, follow the timers, get great bread.

1

Pick your recipe

Country loaf, custom blend, or load a saved preset. Set loaves and parameters.

2

Start the bake

One tap. Phase tracker takes over with live timers and gentle alarms.

3

Coach when stuck

Snap a photo or ask. Claude gives specific feedback for your current phase.

4

Log and repeat

Save the bake to your log. Tweak the recipe. Make it again, better.

Pricing

Free to start. Pro to go further.

One subscription. Works on web, iOS and Android. Cancel anytime.

Free
$0 / forever
For trying sourdough.
  • Classic country loaf recipe
  • 9 phase bake tracker
  • Timers and alarms
  • Full guide library
  • Basic calculator
Start free
Most popular
Pro
$4.99 / month
Or $39 a year. Save 35%.
  • Custom hydration, salt, starter %
  • Custom flour blends, both dough & starter
  • Save and load presets
  • Pro bake phases with autolyse
  • Live Claude AI chat
  • Photo analysis of starter, dough, crumb
  • Full bake history
Try Pro free for 7 days

Pro syncs across iOS, Android and web. Buy on any platform, use on all three.

FAQ

Common questions.

Bigger questions? Email hello@ultrabaker.com.

Is UltraBaker really free?

Yes. The classic country loaf recipe, full bake guide and bake phase timers are free forever. Pro adds custom recipes, AI coach, photo analysis and bake history.

Does Pro work on web and mobile?

Yes. One subscription unlocks Pro on iOS, Android and web. Buy on any platform, sign in on the others, and your Pro entitlement syncs through RevenueCat. Apple, Google and Stripe receipts all roll up to one user account.

Do I need an Anthropic API key?

No. Pro includes Claude AI access through our backend. The web prototype lets advanced users add their own key for direct testing.

Can the AI really read my dough?

Yes. Snap a photo of your starter, dough or crumb. Claude vision analyzes fermentation, structure and gives specific feedback for your current bake phase.

Why a 24 hour bulk ferment?

Cold slow fermentation in the fridge develops flavour and structure with no folding required. It also fits a real life schedule. Mix today, bake tomorrow.

Can I export my recipes?

Yes. Pro users can export recipes and bake history as JSON or share a link. Your data, your call.

Is my data private?

API keys live only on your device in the web prototype. Bake history syncs through your account. We never sell data.

Bake your best loaf this weekend.

Free forever. Pro for the serious. One tap to start.

Open Web App → App Store — soon Google Play — soon