Week-by-Week Twin Guides
Content written specifically for twin pregnancies, not a singleton guide with a twins footnote. Covers twin-specific milestones, scan schedules, and what to expect at each appointment.
Now in Beta · iOS & Android · Built for Twins
The pregnancy app
The pregnancy app
built for twins
Twin Hearts is the only pregnancy app built from the ground up for twin pregnancies. Two babies, two growth curves, two kick patterns. An AI companion that learns your twin type, your history, and your concerns, so every conversation is made for you.
Your partner sees everything you see, in real time. Because a twin pregnancy is never just one person's journey.
Now in early access. Free to try.
What's inside
Everything a twin pregnancy needs
Most pregnancy apps are built for singletons. Twin Hearts is built from the ground up for the unique journey of carrying and raising two.
AI Midwife Chat
Ask anything, any time. Your AI companion understands twin pregnancy from dichorionic to monochorionic, TTTS monitoring to labour positioning, and answers with warmth, not medical jargon. It remembers your previous conversations and builds context over time, so you never have to repeat yourself.
Kick Counting
Track movement for each baby individually. Built for the twin experience where two babies may move independently, and sometimes both at once.
Contraction Timer
Time contractions accurately as labour begins, with a clear log to share with your midwife or hospital team. Keep both parents in the picture in real time.
Scan & Appointment Tracker
Twin pregnancies mean more scans: anatomy, growth, cervical length, Doppler. Log every scan, store notes, and track how both babies are growing week by week.
Real-Time Partner Sharing
One invite code. Both parents get full access to the same pregnancy: kick logs, contraction history, appointment notes, symptoms, and AI chat. Your partner is part of this, not just informed after the fact.
Symptom Logger
Log daily symptoms and track patterns over time. Useful information to bring to appointments, especially for twin pregnancies where symptom monitoring matters more.
Emergency Contacts
Store your midwife, consultant, and hospital contact in one place. Accessible instantly, even when your brain is elsewhere.
Pregnancy Journal
Capture how you feel, week by week. A record of this extraordinary time, written by you, kept forever. Look back at week 12 from week 36 and remember how far you've come.
Designed for two
Everything a twin pregnancy needs, in one place
Twin Hearts is not a “mama app with a partner view.” Both parents are first-class users, with everything shared in real time so neither parent is ever out of the loop.
For You
Everything you need, in your pocket
- Week-by-week guide built for twin bodies
- Log symptoms, weight, and supplements
- Kick count both babies individually
- Time contractions when labour begins
- Chat with your AI midwife at 2am
- Track every scan and grow report
- Keep a journal of this incredible time
For Your Partner
Be part of it, not just informed about it
- Full access to the same pregnancy data
- See kick counts and contraction logs live
- Read the same week-by-week guide as mama
- Know what's happening at each scan
- Ask the AI midwife your own questions
- Track appointments so you never miss one
- Understand what mama is experiencing
Getting started
Up and running in three minutes
No lengthy setup. No confusing onboarding. Just download and start.
1
Download the app
Free on iOS and Android. Create your account as mama or partner. Takes under a minute.
2
Set up your pregnancy
Enter your due date, twin type (DCDA, MCDA, or unknown), and the app personalises everything from week one.
3
Invite your partner
Share a six-digit code. Your partner joins in seconds. Both of you now see the same pregnancy in real time.
Early users
What twin parents say
★★★★★
I've tried four pregnancy apps and none of them understood what it means to be carrying twins. Twin Hearts actually gets it. The week-by-week content, the AI chat, everything is built for two babies, not one. Finally.
Questions answered
Frequently asked questions
What is Twin Hearts?
Twin Hearts is a free twin pregnancy companion app for iOS and Android, designed specifically for twin pregnancies. It provides week-by-week pregnancy guides specific to twin pregnancies, a kick counter, contraction timer, AI midwife chat, scan tracker, and symptom logger, all shared in real time between both parents.
Is Twin Hearts free?
Twin Hearts is currently in beta. Beta testers get 12 months free access. Join via the sign-up form on this page.
Can my partner use Twin Hearts too?
Yes, and that's the whole point. After one parent creates an account, they share a unique invite code with their partner. Both then have real-time access to the same pregnancy: kick counts, contraction logs, appointment notes, symptoms, and AI chat. The partner is a full participant, not just a viewer.
Does Twin Hearts work for all types of twin pregnancies?
Yes. Twin Hearts supports dichorionic diamniotic (DCDA), monochorionic diamniotic (MCDA), and monochorionic monoamniotic (MCMA) twin pregnancies. The week-by-week content, monitoring advice, and AI chat are all tailored to twin-specific milestones, risks, and scan schedules, including guidance on Twin-to-Twin Transfusion Syndrome (TTTS) monitoring.
How is Twin Hearts different from other pregnancy apps?
Most pregnancy apps are built for singleton pregnancies and treat twin pregnancies as a footnote. Twin Hearts is built from the ground up for twin pregnancies. The content, milestones, scan schedule, and risk guidance are all twin-specific, with partner sharing built in so neither parent is ever out of the loop.
Is the advice personalised to my pregnancy?
Yes. Unlike apps that give the same generic information to every user, Twin Hearts' AI builds context around your specific pregnancy. It knows your twin type, how far along you are, what you have asked before, and what matters to you. Every conversation picks up where the last one left off.
Be part of Twin Hearts from the start
We're looking for twin parents to test the app and shape its future. Beta testers get 12 months free access.