Picture the scene.
It's 3am. Your partner has just handed the baby to you. You sit in the dark wondering — when was the last feed? How long did she sleep? Did anyone log the wet diaper?
You text your partner. They're already asleep. So you guess.
Lunara ends the guessing.
Every feed, sleep session, diaper change, growth measurement and milestone is logged once — and seen instantly by everyone caring for your baby. No group chats. No 3am texts. No "I think it was around 2?" conversations.
Just one shared record. Always up to date. For both of you.
What Gets Synced Between Parents and Caregivers
Every category both parents log appears in real time on all connected devices — the moment it's saved. This is what a real baby tracker app sync covers, not just a shared photo feed.
Every entry shows who logged it and when — so there's never confusion at the handover.
How the Baby Tracker App Sync Works
Lunara is a baby tracker app that syncs in three simple steps — no manual sharing, no exporting, no group message required.
⚡ Sync in 3 Steps
Here's what the invite screen looks like inside the app — Settings → Family & Caregivers:
Each person has their own login. Entries show who logged them.
Tracking twins? See how Lunara tracks two babies separately →
Sync is the baseline. Insight is the difference.
Partner co-tracking, grandparent view mode, and AI insights built from your combined data — not just a shared login.
What Lunara Does With Your Shared Data
Every baby tracker app that matters now syncs between two parents. That's the baseline — not the differentiator. What separates Lunara is what happens after the data is shared.
Attribution on Every Entry
Unlike apps where both parents share one login and entries are anonymous, every Lunara log entry shows who logged it. "Fed at 3:02 AM · by Priya." Clear attribution prevents double-dosing, resolves handover confusion, and builds a complete care record — useful at every pediatrician visit.
Notification, Not Just Sync
Sync means the data gets there. Notification means your partner is told the moment it happens. Every logged entry triggers a push notification to all workspace members — your partner doesn't need to open the app, the lock screen tells them.
AI Insights From Combined Data
Lunara's AI weekly insights see your feeding logs and your partner's sleep observations together — as one dataset. It spots patterns impossible in a single-user tracker, such as a feed-to-sleep connection that holds across both parents' shifts.
Shared Baby Tracker App — Honest Comparison
Partner sync is standard now. Here's what still differs.
| Feature | Lunara Family | Huckleberry | Baby Connect | Pebbi | Nara Baby |
|---|---|---|---|---|---|
| Partner sync | ✅ Family plan | ✅ Free (shared login) | ✅ Free | ✅ Free (2 carers) | ❌ Paid only (2026) |
| Individual logins per carer | ✅ | ❌ Shared login | ✅ | ✅ | ✅ |
| Who-logged-what attribution | ✅ | ❌ | ✅ | ✅ | ✅ |
| Push notification per entry | ✅ All carers | ❌ | ❌ | ⚠️ Limited | ❌ |
| AI insights from shared data | ✅ | ❌ | ❌ | ⚠️ Basic | ❌ |
| Grandparent view mode | ✅ Family plan | ❌ | ✅ | ✅ Premium | ❌ |
| Up to 3 child profiles | ✅ Family plan | ✅ | ✅ | ✅ | ✅ |
| 7-day free trial | ✅ | ❌ | ❌ | ❌ | ❌ |
Based on publicly available App Store listings, product pages, and published reviews as of October 2026.
- Partner co-tracking access
- Up to 3 child profiles
- Grandparent view mode
- Family memory timeline
- Unlimited AI questions per month
- Priority support
No credit card commitment until trial ends. Your data is private. Never sold.
Have more than one child? Baby tracker app for multiple babies →
What Parents Say
"I go back to work Monday morning. Lunara is the thing that means I know exactly what happened overnight even though I slept through it. My partner logs everything and I open the app when I wake up. It's changed how we do this."
— Jessica K., mother of Aariv, 4 months, Dublin"We tried sharing one login on another app. We kept overwriting each other's entries. In Lunara every entry has your name on it so we can finally see who actually did what at 3am."
— Priya M., mother of Riya, 6 weeks, London"My mum helps on Wednesdays and she logs everything in Lunara. I used to call her to ask how the feeds went — now I just open the app. It saved a lot of unnecessary anxiety."
— Sarah T., mother of Leo, 3 months, MelbourneFrequently Asked Questions
Every log entry — feeding, sleep, diaper, pumping, growth — is saved to a shared workspace the moment it's submitted. All caregivers connected to that workspace see it instantly on their device. Entries are timestamped and attributed to the person who logged them, so there's never confusion about who fed the baby last or when. Shared tracking is available on the Lunara Family plan.
Yes. With Lunara's Family plan, each parent or caregiver logs in with their own account and sees the same real-time baby log. Unlike apps where both parents share one login, Lunara gives each person their own account — so entries show who logged them. When your partner logs a feed at 3am, you see it on your phone with their name and the exact time.
Yes. Lunara's Family plan ($23.99/month) includes partner co-tracking access — both parents can log and view the full baby record simultaneously. The Family plan supports up to 3 child profiles, grandparent view mode, and a dedicated family memory timeline. A 7-day free trial is available.
Yes. Every time an entry is logged — by either parent, or any caregiver — all workspace members receive an instant push notification. The notification shows what was logged, by whom, and at what time. No more waking your partner to ask if the baby was fed — the notification arrives automatically.
Yes. Lunara's Family plan includes grandparent view mode — grandparents can see the live baby log without needing full editing access. The Family & Caregivers section in Settings manages who has access and at what level. See the Family plan for details.
Yes. Lunara stores entries locally when there's no internet connection and syncs automatically when connection is restored. The other parent receives the synced update on their next app open. This is especially useful during night feeds in low-signal areas or during travel.
"When did she last eat?" A question you'll never have to ask again.
Lunara's Family plan keeps both parents — and every caregiver — looking at the same real-time log. Try it free for 7 days.