# Why does Livia ask “Did you mean 120 ml?” How a baby tracker catches its own typos

> Half-asleep logging goes wrong in predictable ways - an extra zero, a feed logged twice by both parents, a sleep timer left running all day. Livia checks the log for eight kinds of slips and offers a one-tap fix. It checks the log, never the baby.

Using Livia · Published 2026-10-11 · Updated 2026-10-19 · https://livia.baby/blog/why-livia-asks-did-you-mean-120-ml

In short:

- Livia checks every entry for eight kinds of half-asleep slips and offers a one-tap fix.
- Where there's enough history, the thresholds come from your baby's own last 14 days.
- It questions the log, never the baby.

Half-asleep logging goes wrong in predictable ways: an amount with an extra
zero, a feed you and your partner both logged, a timer nobody stopped.
Livia checks every entry as you save it, and every day in History, for
eight kinds of likely slips, and offers a one-tap fix. The rule behind all
of them: Livia questions **the log**, never **the baby**. It will ask "Did
you mean 120 ml?" It will never say "that's too much."

## What mistakes does Livia catch?

| What happened | What Livia does |
| --- | --- |
| An amount that's far outside what's possible, or your baby's usual (1200 ml, or ounces typed as millilitres) | "Did you mean 120 ml?" with the fix one tap away |
| The same thing logged twice within a couple of minutes, often by two parents | Asks which one to remove, each shown with what, when and who logged it |
| A wet diaper and a dirty diaper logged at the same moment | Offers to merge them into one diaper with both |
| A sleep timer, or a feeding timer, running far longer than usual | A gentle check, as a notification, even at night |
| Two sleeps at once, or a meal or daytime bottle logged inside a sleep | Asks which is right |
| An entry that ends before it starts, or starts in the future | Points it out before saving |
| A finished feed or sleep that's many hours long | Asks whether the time is right |
| A long daytime stretch with no sleep logged at all | "Missed a nap? Tap to add it" |

## Where do the thresholds come from?

From your baby, where possible. Livia looks at this baby's own last 14 days:
how much they usually take in a bottle, how long they usually stay awake.
Where there isn't enough history yet, it falls back to wide fixed limits
that only a real typo would cross. It never compares your baby to a typical
range to decide that something is wrong; typical ranges only appear in
Insights, with their source named, and never as a judgement.

## What does Livia leave alone on purpose?

Some things look like overlaps and aren't, so Livia doesn't flag them:

- **Breastfeeding during a sleep.** Dream feeds and contact naps are real.
- **A bottle during a sleep in your nighttime hours.** A night feed the baby
  barely wakes for.
- **Pumping during a sleep.** You pump while the baby naps.

## When does it check?

Twice. **When you save**, so a typo never reaches the log. And **in
History**, where each day with an open question gets a small dot. Open the
day and the question sits at the top with the fix beside it. Tap "That's
right" and Livia remembers: the question doesn't come back, on your phone
or your partner's.

## What about a feed I started by mistake?

Undo lives where the mistake happened, for a minute, instead of in a toast
that disappears. Start a sleep and the card reads "Just fell asleep" with
Cancel where "Woke up" will be. Start a breastfeed and the running side says
"Tap to cancel"; a feed under a minute never saves at all. Switch sides by
accident and switching back within the minute collapses the stray side. The
same minute applies after a relaunch, and your partner's phone reads the
entry the same way.

## Why does this matter for a baby tracker?

Everything else Livia does rests on the log being right: how long since the
last feed, [the next nap estimate](/blog/how-livia-knows-when-the-next-nap-is-likely),
[last night's total](/blog/why-baby-trackers-split-the-night-in-two),
and later, how many days of formula are left. A log with a 1200 ml bottle
in it gives wrong answers everywhere, quietly. Catching the slip at the
moment it happens is cheaper than a wrong week of averages.

None of this is about your baby's health. If something about feeding or
sleep worries you, ask your pediatrician. Livia is only making sure the
record you show them is the one you meant to keep.
[Get early access](/#download), free.