Coming sooniOS · Android2026

FeedBubbo

A virtual pet for your sourdough starter. Feed it, keep it happy, and let it walk you through baking real bread — step by step, with timers that start themselves.

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The Bubbo starter creature — a small dough spirit with ears and whiskers — standing in a painted woodland scene
01What it does

A starter that visibly rises

Feed it and the creature domes and swells; let it go hungry and it slumps and spreads, the same way a real culture does. The home screen never scrolls — the creature scales to fill whatever space is left, so Feed is always in reach.

A world with no API behind it

The sky follows the real time of day, the weather follows the starter’s mood — clear when thriving, rain when starving, snow in the fridge — and the woodland thickens as the culture matures. All derived from state and the clock. No weather service, no location permission.

Six life stages

Culturing, baby, kid, teen, adult, sage. It grows, its belly fills with fermentation bubbles, ears appear at kid, whiskers at teen. A sage earns a third pair and brows.

Feeding that changes with age

Ratios shift from 1:1:1 for a young culture up to 1:5:5 for a mature one, because a three-week-old starter cannot eat through what a six-month-old thrives on.

Bakes that run themselves

Steps with rests or bakes start a timer when you complete them and notify you when the next one is due. Sessions survive app restarts; leaving a bake asks whether to keep it running.

Troubleshooting that finds you

A cited library that surfaces the entries most likely to apply right now. Graded safety / fixable / this is normal — because most sourdough panic is about completely expected behaviour.

02Where it contradicts the internet

Cited,not vibes

Every troubleshooting entry links its source. A few deliberately disagree with the advice you will find everywhere else.

  • The float test is not a readiness check.

    Whole grain starters often sink at peak and King Arthur’s own testing found barely-risen dough could still float. The app teaches doubling time instead.

  • A new starter going quiet around day 4 is progress.

    The day 2–3 burst is usually Leuconostoc bacteria; the lull that follows is lactic acid bacteria taking over. Most guides call it failure.

  • Pink or orange streaking is the one unsalvageable sign.

    Likely Serratia marcescens, not mould. Everything else in the library has a path back.

It collectsnothing

No account, no analytics, no crash reporting, no ad identifiers, no third-party SDKs, no location. Reminders are local notifications generated on your phone — there is no push server and no device token. We operate no servers at all.

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