Twinly: Twin Baby Tracker is designed around caring for two babies in one shared record. Caregivers can log bottle amounts, breastfeeding sides and duration, pumping, diapers, sleep, growth, potty training, milestones, vaccines, medicines, and appointments. Records can be shared with another caregiver through an invite code, and entries show who logged them. Each person has an account, and the service can be used in a browser as well as on iPhone. The app supports offline logging and syncs entries when the device reconnects. Expecting parents can also use a hospital-bag checklist, twin gear and budget planner, shared gift list, and contraction timer. Appointment summaries can be exported for a GP or pediatric care team, and the developer says the data is stored in the EU and can be exported or deleted. Twinly states it is not a medical device and provides no medical advice. The listing does not state paid features or pricing.

Twinly: Twin Baby Tracker
Twinly coordinates twin baby care logs, appointments, pregnancy preparation, and caregiver sharing across phones and browsers.
Overview
A closer look at Twinly: Twin Baby Tracker.
A closer look
App screenshots
Choose with confidence
The useful details.
What it does
- Log feeds, pumping, diapers, sleep, growth, medicines, appointments, vaccines, and milestones for twins.
- Share a family record through separate caregiver accounts and an invitation code.
- Continue logging without a connection and sync entries when back online.
- Use pregnancy preparation tools such as a hospital checklist, gear and budget planner, gift list, and contraction timer.
- Export a summary of feeding, growth, and health records for appointments.
A good fit for
- Parents and caregivers tracking routines and records for twins in one shared workspace.
- Expecting parents of twins who want planning tools before birth and care logs afterward.
Worth knowing
- The app requires caregiver accounts and stores shared data in the EU; the listing does not specify subscription or paid-feature terms.
- The developer says Twinly is not a medical device and provides no medical advice; follow guidance from a qualified care team.
Frequently asked questions
Answers based on the app’s official listing and reviewed information.
What is Twinly: Twin Baby Tracker used for?
Twinly coordinates twin baby care logs, appointments, pregnancy preparation, and caregiver sharing across phones and browsers.
What can you do with Twinly: Twin Baby Tracker?
Log feeds, pumping, diapers, sleep, growth, medicines, appointments, vaccines, and milestones for twins. Share a family record through separate caregiver accounts and an invitation code. Continue logging without a connection and sync entries when back online. Use pregnancy preparation tools such as a hospital checklist, gear and budget planner, gift list, and contraction timer.
Who is Twinly: Twin Baby Tracker designed for?
Parents and caregivers tracking routines and records for twins in one shared workspace. Expecting parents of twins who want planning tools before birth and care logs afterward.
What should you know before downloading Twinly: Twin Baby Tracker?
The app requires caregiver accounts and stores shared data in the EU; the listing does not specify subscription or paid-feature terms. The developer says Twinly is not a medical device and provides no medical advice; follow guidance from a qualified care team.
What does Twinly: Twin Baby Tracker cost?
Apple lists a free download; the current store description does not specify whether paid features or subscriptions are available.
Which platforms support Twinly: Twin Baby Tracker?
Greatooly's reviewed app information lists iOS.
Researched from official sources; this is not a hands-on review. Last checked 2026-11-10.
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