Feedings
Breast, bottle, or solids. When, how much, how long.
Start in seconds
Track tiny moments.
A baby tracker that works when you can barely keep your eyes open. One hand. One tap. Done.
Free to use. No credit card required.
It's 3am. You don't have six taps.
The feeding happened. The diaper changed. Nap time shifted. You know one of these is important by morning.
Your baby tracker should help you capture moments fast, not force another round of decision fatigue at midnight.
henrii keeps baby tracking simple, quick, and one-handed.
Everything your baby needs. Nothing you don't.
Track feedings, sleep, diapers, and more. All designed for one-handed use at 3am.
Sleep
Start a live timer, or log after the fact when you forgot to hit start.
Diapers
Type, color, consistency. Yes, you will care about poop color.
Vaccinations
Pre-loaded schedules for the US, UK, and Vietnam. Knows what's due based on birthday.
Growth
Weight, length, head circumference plotted against WHO percentile curves.
Milestones
Rolling over, first words, crawling. Based on WHO and CDC data.
Appointments
With file attachments and reminder emails so you stop missing them.
What makes henrii different
English and Vietnamese, with more languages on the way.
Offline-first
Log events without wifi. Everything syncs when you get back online.
Scheduled dark mode
The app dims on a bedtime schedule. One less flashbang at night feeds.
Caregiver support
Invite trusted people to share logs and stay in sync across homes.
PDF summary export
Generate quick 30-day reports to bring meaningful context to pediatric visits.
Insightful patterns
See tendencies and averages without judgment, so you can make calmer decisions.
Bilingual experience
English and Vietnamese, with more languages on the way.
How it works
Three quick steps. One calm workflow.
Step 1
Sign up
Create your free account in 30 seconds.
No card required.
Step 2
Add your baby
Enter their birthday and country. Vaccinations auto-populate.
Auto-schedule plus smart reminders.
Step 3
Start tracking
Tap the + button. Pick the event. Done.
Logs in under 3 seconds.
Free vs Premium
Core tracking is free forever. The stuff that matters most costs nothing.
Free
Everything you need to start.
$0
Forever
- Feeding, sleep, and diaper tracking
- Vaccination tracker
- Growth logging
- Milestones checklist
- Offline support
- Dark mode
Best value
Premium
For parents who want the full picture.
Coming soon
- Feeding, sleep, and diaper tracking
- Vaccination tracker
- Growth logging
- Milestones checklist
- Offline support
- Dark mode
- WHO growth percentile charts
- Analytics dashboard with trends
- PDF export for pediatrician visits
- Caregiver invites (up to 5)
- Appointment attachments
One-time support
Family Plan
Support us once and lock in future updates for one baby.
$99
No recurring subscriptions.
- Support a small independent team
- All future features included
- Priority support and roadmap influence
- No cancellations, no renewals
Built to be calm at 3am
Why the name "henrii"?
The app is named after my son, Henry.
The double i in the name is our logo idea: parent and baby side by side.
Built for parents who need support, not more complexity.
Frequently asked questions
What is henrii?
henrii is a baby tracking app built by a sleep-deprived dad who got tired of the alternatives. It tracks feedings, sleep, diapers, vaccinations, growth, and milestones — designed so every action takes under 3 seconds, one-handed.
Is it really free?
Core tracking (feedings, sleep, diapers, vaccinations, milestones) is free forever. Premium features like WHO growth charts, analytics dashboards, and PDF export will be available with a paid plan.
Do I need to download it from the app store?
No. henrii is a Progressive Web App. Install it on your home screen from any browser — no app store required. Works on iPhones, Androids, tablets, and desktops.
Does it work offline?
Yes. Log events without wifi. Everything saves locally and syncs when you're back online. Babies don't care about your signal strength.
Can my partner or family use it too?
With a Premium plan, you can invite up to 5 caregivers — grandparents, your partner, or a nanny. Everyone sees the same data. No more "did you feed her?" texts.
Is my baby's data safe?
Your data is encrypted, access is controlled at the database level, and your baby's information never leaves your account unless you invite someone. We don't sell data, don't run ads, and don't track your behavior.
What languages are supported?
English and Vietnamese at launch. More languages are coming.
How is henrii different from other baby trackers?
Most trackers look like medical devices or take six taps to log a bottle. henrii is built for exhausted parents: one-handed logging in under 3 seconds, scheduled dark mode for night feeds, offline support, and analytics that show patterns without judgment.
Built for 3am.
Get started with your free account and start tracking the details that matter.