Bundle of Joy

Which twin ate last?

Keep each twin’s feeds, diapers and growth in their own log, shared with your partner. Track both babies with Premium, one subscription for the whole family.

Get started

Scan with your Android phone to get the app.

Get it on Google Play
Or use it in your browser

Create your account, then upgrade in the app to add both babies.

The Bundle of Joy Today screen for one baby, Sofia, her name at the top left: last feed 45 minutes ago, formula 120 ml, with today’s totals of one breastfeed and three bottles; last diaper 1 hour 19 minutes ago, pee and poop, two of each today; last medicine 3 hours 7 minutes ago, vitamin D 1 mL. The Bundle of Joy Today screen for one baby, Sofia, her name at the top left: last feed 45 minutes ago, formula 120 ml, with today’s totals of one breastfeed and three bottles; last diaper 1 hour 19 minutes ago, pee and poop, two of each today; last medicine 3 hours 7 minutes ago, vitamin D 1 mL. The Bundle of Joy Today screen for one baby, Sofia, her name at the top left: last feed 45 minutes ago, formula 120 ml, with today’s totals of one breastfeed and three bottles; last diaper 1 hour 19 minutes ago, pee and poop, two of each today; last medicine 3 hours 7 minutes ago, vitamin D 1 mL.

Nobody should be doing twin math at 3AM.

Two babies on two clocks, and two tired people sharing one baby tracker. Log the feed on your phone, and your partner can check it without waking you.

Each twin gets their own screen.

Tap the name at the top to switch. Today, the Timeline and the growth charts follow whichever twin you pick.

  • You each pick your own. Switching on your phone doesn’t switch your partner’s.
  • Back to back is fine. Feed one, then the other. The app won’t think you logged the same feed twice.
  • A feed timer each. Breastfeeding both? Two timers run side by side.
  • Their own usual feed. One on formula, one breastfed: each opens on the right one.
  • Both on your home screen. On Android, add a widget for each twin and both last feeds are there at a glance.
  • One on your wrist. The Wear OS watch shows the twin you picked on it. Switch in the watch app.

A bottle each is two logs.

A separate log for each baby. One Premium plan for everyone helping.

However you split the night.

One twin each, or one of you takes both. Either way, the handover’s a glance.

  • A login each. Invite your partner with one link. How sharing works
  • Every entry has a name on it. Who logged it sits next to the time.
  • Live on both phones. Log a feed and it pops up on the other phone a few seconds later.
  • No signal? Log anyway. It sends when you’re back. How offline works
The Timeline screen for one baby: a search box, filter pills for All, Feeds, Diapers and Medication, a banner reading “15 older entries are locked” with an Unlock link, then today’s entries newest first, each signed by whoever logged it: a 120 ml formula feed 45 minutes ago by Rui, a pee and poop diaper by Ana, an 18-minute breastfeed by Ana, a Vitamin D dose by Ana, another formula feed by Rui, and a poop diaper by Rui. The Timeline screen for one baby: a search box, filter pills for All, Feeds, Diapers and Medication, a banner reading “15 older entries are locked” with an Unlock link, then today’s entries newest first, each signed by whoever logged it: a 120 ml formula feed 45 minutes ago by Rui, a pee and poop diaper by Ana, an 18-minute breastfeed by Ana, a Vitamin D dose by Ana, another formula feed by Rui, and a poop diaper by Rui.

Reminders with their name on them.

Set a feed, diaper or medicine interval for each twin. Your phone tells you whose it is: “3h since Leo’s last feed”. Tap it and the app opens on Leo, ready to log.

The Growth screen for one baby: Sofia’s weight history plotted against the WHO percentile curves, reading 52nd percentile at 3 months, with the latest entry, 6.10 kg on Sep 27, listed underneath. The Growth screen for one baby: Sofia’s weight history plotted against the WHO percentile curves, reading 52nd percentile at 3 months, with the latest entry, 6.10 kg on Sep 27, listed underneath.

A report each for the checkup.

Each twin has their own WHO growth charts and their own pediatrician PDF. The CSV export has both, with a column saying which baby.

Growth charts · The pediatrician report

One subscription for both babies.

Track both twins with Premium for $4.99 a month or $39.99 a year. Everyone you invite is included. Free covers one baby and two people.

  • The rest comes with it. Your full history, grandparents and a nanny, sleep, photos and more. What Premium adds

Cancel any time. Your account, your family and everything you logged stay right where they are.

Questions from twin parents.

Can I track more than one baby?

Yes, with Premium. Twins, or a second baby later: each one gets their own timeline, charts and reminders. Tap the baby’s name at the top of the screen to switch.

Do both parents pay?

No. Premium is per family. One subscription covers everyone in it.

Do we both need an account?

Yes, one each. You invite your partner with a link, so nobody shares a password, and every entry shows who logged it.

How sharing works

Can I add a grandparent or a nanny?

Yes, with Premium: grandparents, a nanny, anyone you invite. Free fits two people, and Premium takes the limit off.

See what Premium adds

More questions parents ask

Keep up with both of them.

Both babies’ feeds, diapers and growth in one app. Premium covers everyone who helps.

Get started

Scan with your Android phone to get the app.

Get it on Google Play
Or use it in your browser