# How do two parents share one baby tracker? Partner sync in Livia, explained

> In Livia, you invite a partner, grandparent or nanny by email, each person gets their own sign-in, and every entry shows up on every phone within seconds, with who logged it. It works offline, nothing gets overwritten, and it's free, not a family plan.

Using Livia · Published 2026-10-11 · Updated 2026-10-19 · https://livia.baby/blog/how-two-parents-share-one-baby-tracker

In short:

- Invite a partner, grandparent or nanny by email; each has their own sign-in.
- Every entry shows up on every phone within seconds, with who logged it.
- Nothing is ever overwritten, even after a day offline, and sharing is free.

Two people doing night shifts need one log, not two. In Livia you invite
your partner, a grandparent or a nanny by email, each of them signs in
with their own account, and everything anyone logs appears on every phone
within seconds, with the name of whoever logged it. There is no family plan
to buy and no "sync group" to set up: sharing a baby is simply how
[Livia](/#download) works.

## How do I invite my partner?

1. Open More → Caregivers and enter their email address.
2. They install Livia and sign in with that same address (sign-in is a
   6-digit code we email; there is no password to share).
3. The baby is waiting for them. If they already use Livia for another baby,
   the invite appears under Add a baby.

Everyone can log, edit and start timers. Everyone sees the same Home,
History and Insights. If you've told Livia how each of you is related to
the baby, Caregivers reads "Ana · Mom, Tom · Dad, Rosa · Nanny".

## What does my partner see when I log a feed?

The entry, within seconds, on their Home screen: how long since the last
feed updates, the day's count ticks up, and the entry shows who logged it.
A sleep or breastfeeding timer you start is running on their phone too,
so whoever picks the baby up next sees "asleep for
1h 10m" and taps "Woke up" on their own phone. The undo that Livia offers for a minute after a timer
starts reads the same on both phones.

## What if we're both logging at once, or one of us is offline?

Nothing gets overwritten, because Livia never overwrites anything. Every
entry is saved on the phone that made it first, then copied to the others.
An edit is a new entry that says "this corrects that one" and a delete is a
new entry that says "that one is void". Two phones can log at the same
moment, or one can be in airplane mode for a day, and when they meet the
result is the same on both: no conflicts, no "which version do you want to
keep". The one thing two people really do get wrong, logging the same feed
twice, Livia [catches and offers to merge](/blog/why-livia-asks-did-you-mean-120-ml).

## Can a grandparent or nanny use it without seeing everything?

Each caregiver sees the baby they're invited to, and only that baby. A nanny
who works for two families sees two babies, switched from the top bar, each
one shared only with that family. The person who set up a baby can remove a
caregiver at any time; they lose access on their phone straight away, and
what they logged stays with the baby.

## Does it work for twins, or a second child?

Yes. Add a baby from the name in the top bar and switch between them there.
Each baby has their own settings: what you track, naps a day, nighttime
hours, units, adjusted age.

## How does this compare to other baby trackers?

Most trackers can share a log; the differences are in what it costs and how
it's built.

| | Livia | Others |
| --- | --- | --- |
| Price of sharing | Free | [Baby Daybook: Premium](https://babydaybook.app/premium/) · [Glow Baby: Family Plan](https://support.glowing.com/help/en-us/24-partner-caregiver/110) · Baby Tracker (Nighp): paid full version · Nara Baby: included in its subscription · Huckleberry: free |
| Each caregiver has their own sign-in | Yes | Baby Tracker uses a shared sync group; [joining one replaces the data already on that phone](https://nighp.com/babytracker/FAQ.html) |
| Shows who logged what | Yes | Varies |
| Works offline, syncs later | Yes, by design | Varies |

Facts about other apps come from their own pages, linked above, checked in
October 2026; the full comparison is in [Huckleberry vs Nara Baby vs Baby
Tracker vs Livia](/blog/best-baby-tracker-apps-compared).

## What isn't there yet?

Invites are by email only. A tap-to-join link is planned, and a read-only
web view for a pediatrician or a relative without the app is on the list
for later. Partner sync is free and stays free: everything other trackers
put in a premium plan (sharing, the next-nap estimate, growth charts, full
history) is included in Livia. The one thing Livia will charge for is Ask
Livia, the assistant that's coming.

[Get early access](/#download) and invite your partner from the first
night.