Onjjakkung: Baby Tracker & Log
Newborn feeding, shared by two
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Mom logs a feed, Dad sees it right away. No sign-up: connect with a 6-digit code. Pick who is on duty tonight and wake up to one card of the whole night.
Mom logs a feed and it shows up on Dad's phone right away.
Onjjakkung is a baby tracker for two tired parents: one tap to log, and everyone in the family sees the same record.
■ One tap to log
· Breastfeeding (left/right timer), formula and pumped milk (ml), pumping, diapers (pee, poop, both), sleep, notes
· Tapped the wrong thing? Undo within 10 seconds
· Forgot one? Add it later with the right time
■ Shared with your family
· No sign-up. Connect with a 6-digit code
· Works even when your family uses different kinds of phones
· Every record shows who logged it
· If two of you log the same feed, the app asks whether to merge them
· No signal? Records are saved on the phone and sync when you are back online
· Up to 5 people: Mom, Dad, Grandma, Grandpa, a caregiver
■ At night, only one of you wakes up
· "I've got it": only the phone of whoever takes the next feed rings
· "I'll take tonight": until the time you set, only the on-duty phone rings. If it is not answered within 20 minutes, the rest of the family is alerted
· "While you slept" and "While you were away": when you are back, one card sums up what happened
■ Next-feed reminder
· Set a feeding interval and get a reminder 15 minutes before the next feed
· Works when you use the app on your own, too
■ Stage guide
· Typical ranges for wet diapers, poop, feeds and sleep for your baby's age in days
· See them side by side with your last 24 hours
· Signs that mean you should call your doctor
· Uses official sources such as the American Academy of Pediatrics, with a source on every line
■ Easy on the eyes at night
· The screen turns dark on its own from 9 PM to 7 AM
· Large text sizes are supported, so grandparents can use it too
■ No sign-up, no ads
· Start right away without an account. There are no ads
· When you use it on your own, records stay on this phone. They are stored on our server in Seoul only after you agree to connect with family
■ Pricing
· Logging and sharing between two people are free
· Handoff features and connecting a 3rd to 5th family member come with the lifetime pass: pay once, and whoever buys it, the whole family gets it
· After a second family member joins, you can try them free for 14 days first
Amounts are logged in ml.
Onjjakkung is not a medical device and does not diagnose, treat, cure or prevent any disease. If you are worried about your baby's health, talk to your pediatrician.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
We made Onjjakkung easier to use.
- Snooze the next feed alert when your baby is asleep
- See who is on duty tonight and which phone will ring, right at the top of Today
- New stats for feeds, sleep, diapers and weight over 7, 14 or 30 days
- Log several supplements at once, and log a bath in one tap
- Jump to any past day from the timeline
- A new screen for families waiting for their baby
The developer, Sanghyun Lee, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
- Health & Fitness
- Purchases
- Contact Info
- User Content
- Identifiers
- Other Data
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Sanghyun Lee
- Size
- 67.8 MB
- Category
- Medical
- Compatibility
Requires iOS 15.1 or later.
- iPhone
Requires iOS 15.1 or later. - iPod touch
Requires iOS 15.1 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
English and 2 more
- English, Japanese, Korean
- Age Rating
13+
- 13+
- Infrequent
Medical Treatment information
Contains
Health or Wellness Topics
- In-App Purchases
Yes
- Lifetime Family Pass $11.99
- 14-day Trial $0.00
- Copyright
- © 2026 Glonaris