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Everyone who helps. One baby. One thread.

RelayBaby is the baby tracker built around the handoff. Log feeds, sleep, diapers, and medication once, and the next caregiver walks in already up to speed.

Coming soon to the App Store for iPhone. One email, on launch day.

RelayBaby home screen on iPhone: Sam is on duty, the baby was fed 25 minutes ago, with one-tap buttons to log a feed, sleep, diaper, medication or note

Scattered texts. Tired memory. Sticky notes on the fridge.

Parents and caregivers shouldn’t have to thread together baby care across three group chats and a half-remembered conversation at the door.

RelayBaby is a shared baby tracker for iPhone. It gives your household one shared timeline, so whoever is on duty always knows what just happened, what’s next, and where to pick up.

RelayBaby Log Feed screen on iPhone with Breast, Bottle and Solid options, an amount, a time and an optional note

3 AM. One hand free.

Tap to log feeds, sleep, diapers, medication, or a quick note. No menus, no hunting, no math in the dark.

Feeds
Breast, bottle, or solids. Times, volumes, and side switching are handled for you.
Sleep
Tap to start, tap to stop. Naps and overnight roll up into one summary.
Diapers
Wet, dirty, mixed. Backdate it when you forget mid-routine.
Medication
Log doses and set reminders once. Everyone sees who gave the last dose and when.
Notes
Mood, milestones, the thing you don’t want the next person to miss.
Everything RelayBaby logs

Care passes cleanly, the way a baton does.

Most baby trackers log the day. RelayBaby is built around the moment that actually matters: when one set of hands becomes another. The next caregiver doesn’t inherit a guess. They see the last feed, the last nap, the open reminders, and the one note you wrote.

See how a handoff works
RelayBaby home screen on iPhone: Sam is on duty, the baby was fed 25 minutes ago, with one-tap buttons to log a feed, sleep, diaper, medication or note
RelayBaby handoff screen on iPhone: who is on duty, the note left by the previous caregiver, an open reminder, and the last feed, sleep and diaper

By daylight, the whole day has names on it.

The day rolls up into a calm timeline: totals at the top, every entry below, and who logged each one. Whoever opens the app sees the same picture, synced across iPhones.

How the shared timeline works
RelayBaby shared timeline on iPhone: a daily summary of feeds, sleep, diapers and meds above a list of entries showing which caregiver logged each one

One plan. Six people. Nobody else pays.

Invite the people who actually help: a partner, grandparents, a nanny, a family helper. One subscription covers you plus up to five of them. They join free with a short invite code, on their own iPhone.

How Care Circle works

RelayBaby, in plain terms.

What it is
A shared baby tracker: one timeline for feeds, sleep, diapers, medication and notes, with a handoff summary for whoever takes over.
Who it's for
Households where more than one person looks after the baby: two parents, grandparents, a nanny, family helpers.
Platform
iPhone. Launching on the App Store.
People per plan
One subscription covers you plus up to five people in your Care Circle. They join free with a short invite code.
Price
A paid subscription through Apple. A free trial may be offered at launch. Cancel anytime in your Apple account.
Privacy
Private to your Care Circle. No ads, and personal information is not sold. See the Privacy Policy.
What it isn't
Medical advice. RelayBaby keeps records and coordinates care; questions about your baby's health go to a healthcare professional.

Questions, answered.

When will RelayBaby be available?

RelayBaby is launching on the iOS App Store. Join the launch list and we’ll email you the day it goes live.

Is RelayBaby free?

RelayBaby is a paid app. A free trial may be offered through the App Store at launch. You can manage or cancel anytime in your Apple account.

Who is it for?

Parents and caregivers who share baby care: partners, grandparents, nannies, and family helpers. RelayBaby is designed for households with more than one set of hands.

Does it replace a pediatrician?

No. RelayBaby is a care coordination and recordkeeping app. It does not provide medical advice, diagnosis, or treatment. Always contact a qualified healthcare professional for medical questions.

Do the people I invite have to pay?

No. One subscription covers you plus up to five people in your Care Circle, a partner, grandparents, a nanny. They join free with a short invite code.

How does Care Circle sync work?

When you invite a caregiver to your household, they see the same shared timeline for your child: feeds, sleep, diapers, medication, notes, reminders, and handoffs.

Will my data be private?

Your baby-care data is private to your Care Circle. RelayBaby does not sell personal information. See our Privacy Policy for full details.

We built RelayBaby because at 3 AM, with a newborn and a partner asleep, no app we tried answered the only question that mattered: what happened in the last four hours?

The RelayBaby team, parents ourselves.

Be the first to hold it.

We email once, on the day RelayBaby goes live in the App Store. That is the entire promise.

No newsletters, no drips, no sale of your address.