MoonleapThe leap chart that learns your baby
See when your baby's growth leaps are coming, what they're learning, and how to play along. Ask anything with private AI that runs on your iPhone, and watch the chart fit itself to your baby.
Download for iPhone
Babies don't read the chart
Leap charts are a helpful map, but parents tell the same two stories again and again.
"The dates were off for us"
Leaps often arrive a week early or late. A chart that only predicts, and never checks, leaves you second-guessing at 3 a.m.
"I had to pay before I saw anything"
Nobody wants to subscribe to an app they've never tried, especially with a newborn and no sleep.
Three taps to your baby's chart
Add the due date
Leaps follow the due date, not the birthday, so premature babies are counted right.
See the moons
Ten leaps to about 18 months. Each one waxes to a full moon at its peak, then wanes into calm.
Play and write it down
Tick the signs, try a game made for this leap, and keep a diary that sorts itself by leap.
Ask Moonleap anything
"Is this a leap or teething?" Answers are written on your iPhone by Apple's on-device model, from Moonleap's guide and your own diary, with the sources shown. Nothing you type leaves your phone, and questions about symptoms always point you to your doctor.
Fitted to your baby, not a template
Rate each day with one tap. Moonleap compares the moods with the leaps and, when your baby runs early or late, offers to move the whole chart. Scrub to any week, and add every leap to your calendar.
Night mode
Red light and low brightness, "Is this a leap?" answered from your baby's own chart, a calm checklist to work through, and soft brown noise. Note the night in one tap.
What to do, not just what to expect
Every leap has games built for the skills it brings, with photos, what you need and simple steps. Widgets on the Home and Lock Screen show the moon and the days to calm.
A month worth keeping
Your notes and photos become a monthly card, with a short recap written on your iPhone. Share it with grandparents, or send the whole diary to your partner: it merges, nothing is overwritten.
The answer is on your Lock Screen
No need to open the app at 3 a.m. Widgets show the moon and the days to calm, today's leap can sit in the Dynamic Island, and the evening check-in is answered with one tap, right from the notification.
Mila
4 days
to calm
One calm app for the first 20 months
The chart, the signs, the diary, the rhythm, Ask Moonleap, night mode and widgets are free. Plus adds the full content.
Leap chart from the due date
Ten leaps drawn as moons, counted from the due date so premature babies are counted right.
A chart that learns
Rate each day in one tap. When your baby runs early or late, Moonleap offers to move the chart.
Ask Moonleap
Private, on-device AI answers from Moonleap's guide and your diary, with sources.
Signs to notice
What you might see in each leap, to tick off as it happens.
120 new skills
What your baby is learning now, grouped by senses, movement, talking, people and thinking.
150 milestones
Common age windows, not deadlines. Each tick lands in the diary with the date.
80 play ideas
Simple games for each leap, with photos, what you need and easy steps.
Diary with photos
Notes, photos and firsts, tagged with the leap they happened in.
Your baby's rhythm
Daily moods drawn over the leaps, so you can see what really fits.
Night mode
Red light, “Is this a leap?”, a calm checklist and soft brown noise for 3 a.m.
Widgets and Live Activity
The moon and the days to calm on your Home Screen, Lock Screen and Dynamic Island.
One-tap check-in
An evening notification you answer right from the Lock Screen, plus leap reminders.
Leaps in your calendar
Every leap added to your iPhone calendar in one tap.
Newborn weeks
What to expect in weeks 1 to 4, before the first leap.
Leap Story
Each month becomes a card with photos and a short recap to share with family.
Made for both parents
Send the diary to your partner; it merges without overwriting. Plus works with Family Sharing.
iCloud sync
Your own devices stay in step through your private iCloud.
Several babies
Twins or siblings, each with their own chart and diary.
49 languages
From Arabic to Vietnamese, including right-to-left.
No account
No sign-up and no tracking. Your baby's data stays yours.
PLUS = part of Moonleap Plus. Leaps 1 and 2 are free in full, including their skills and play ideas. Ask Moonleap is free for 3 questions a day; written answers need an iPhone with Apple Intelligence.
Free to start. Pay once if you like it.
Leaps 1 and 2 in full, the whole chart, the signs for every leap and your diary are free. Plus unlocks the rest.
Free
- Chart for all ten leaps, with dates
- Signs for every leap
- Leaps 1 and 2 in full
- Diary, photos and daily mood
- Ask Moonleap, 3 questions a day
- Widgets and night mode
Plus, once
- All ten leaps in full
- 80 play ideas
- 150 milestones
- Unlimited Ask Moonleap
- Every baby in the family
- Shared with Family Sharing
Plus, yearly
- Everything in Plus
- 7 days free, reminder before it ends
- Or $3.99 a month
Questions parents ask about Moonleap
What is a developmental leap?
Researchers noticed that many babies go through short, fussy stretches at similar ages, counted from the due date, often followed by new skills. Moonleap maps ten of them over the first 18 months or so. Timing varies by a week or two, and every baby is different.
Why the due date and not the birthday?
Brain development follows the time since conception, so a baby born three weeks early usually reaches each leap three weeks later than their birthday suggests.
Is this medical advice?
No. It's general information to help you understand fussy days. If your baby has a fever, feeds poorly, or cries in a way that worries you, call your doctor.
Do I need an account?
No. Your baby's data stays on your iPhone, and in your own private iCloud if you sync your devices. There is no sign-up and no tracking. Anonymous usage stats and crash reports help us improve the app; you can switch them off in Settings.
Does the AI send my questions anywhere?
No. Ask Moonleap uses Apple's on-device model, so questions and answers never leave your iPhone. It needs an iPhone with Apple Intelligence; on other iPhones Moonleap shows the matching pages of its guide instead. It is not a doctor, and symptom questions are always pointed to yours.
Can my partner use it too?
Yes. Send your baby's diary from Settings; on their iPhone it merges without overwriting anything, and they can send theirs back. Plus is shared through Apple Family Sharing at no extra cost.
When is my baby's next leap?
Count from the due date: the first leap usually starts around week 5, then nine more follow until about 18 months. Moonleap shows your baby's dates, and the free leap calculator works in any browser.
How much does Moonleap cost?
The chart, the signs for every leap and the diary are free. Moonleap Plus is $29.99 once, $19.99 a year with a 7-day free trial, or $3.99 a month (US prices).
Can I cancel?
Yes, in one tap from your iPhone's Settings. We remind you two days before a free trial ends. Or skip subscriptions and pay once.