Scientifically Backed By WHO & PubMed

Understand Your Baby, Stop Guessing

See leaps before they begin, follow sleep, log first foods and track every milestone. All in one app.

LittleLeaps brings your baby's development together in one app: a leap calendar built from the due date, sleep tracking, first foods, 52 milestones, memories, teeth and WHO growth charts.
7-Day Free Trial · Cancel anytime
10K+ Happy Families
LittleLeaps App Icon

One App, Your Baby's Whole Journey

The screen you open every day: ten modules, one tap away, with your baby's latest numbers.

One Timeline

Every milestone, first food and nap in one story.

WHO Growth

Weight, height and head size on WHO percentile curves.

52 Milestones

Development from first smile to first steps, month by month.

Memories & Firsts

11 firsts plus your own, saved with photos and notes.

Teeth Tracker

20 teeth with expected eruption windows.

Play & Activities

134 age-matched activities, with why each one matters.

Sleep Tracking

Naps and nights in one tap, with weekly patterns.

First Foods

81 foods with reactions and allergen notes.

Monthly Report

An 8-page PDF, plus Story and Post cards.

Family Sharing

Invite a co-parent, and everyone sees the same baby.

Baby Development & Parenting Guides

Evidence-based guides on infant sleep, nutrition, growth spurts, milestones, and postpartum care.

Development
6 min read

Wonder Weeks: What They Are and How to Cope

You know the scenario: Your baby's gas is gone, sleep has settled, and just when you say, "Finally, life is getting back to normal"... BAM!

Read Guide
Nutrition
7 min read

Transition to Solid Foods: Starting at 6 Months

Transitioning to solids is not just about filling a tummy; it is a huge developmental step where your baby meets textures, tastes, and social eating culture

Read Guide

Not Just a Calendar, Your Parenting Assistant

LittleLeaps works as a parenting assistant, not just a calendar: no complex data entry, only the insights you need.

Why is he crying?

Instantly see if crying spells are leap-related.

Sleep Storms

Be prepared by knowing sleep regression periods in advance.

Scientific Relief

Reliable parenting advice backed by PubMed and experts.

Personalized Flow

Development calendar calculated specifically for your baby based on their due date.

One Timeline

Milestones, first foods, teeth and naps in a single story.

The Whole Family

Invite a co-parent; everyone tracks the same baby.

More Than Leaps, The Whole Picture

The leap calendar is only the beginning. Sleep, feeding, milestones and memories are in the same app.

Sleep, finally simplified
Sleep

Sleep, finally simplified

Log naps and nights with a single tap and spot the patterns behind the tough weeks.

  • Nap and night sessions in one tap
  • Next sleepy window predicted
  • Weekly sleep insights
First foods without the guesswork
Nutrition

First foods without the guesswork

Introduce solids one food at a time and remember exactly how your baby reacted.

  • 81 first foods with allergen flags
  • 5 reaction types logged per food
  • Keep what they loved and what to avoid
52 milestones, every stage
Development

52 milestones, every stage

Follow development month by month and mark what your baby has already mastered.

  • From first smile to first steps
  • Mark achieved and add a photo
  • See what usually comes next
Every first, saved
Memories

Every first, saved

A private album of firsts that grows with your baby, plus a timeline you will reread for years.

  • 11 firsts plus memories of your own
  • Photos and notes on every entry
  • One shared timeline with your family
Play ideas for every week
Play

Play ideas for every week

Age-matched activities with a clear explanation of what each one builds.

  • 134 activities across 4 development areas
  • Weekly summary and streak
  • Why each activity helps development
Growth on the WHO curves
Growth

Growth on the WHO curves

Log weight, height and head circumference and see your baby on WHO percentile curves.

  • Weight, height and head size
  • WHO percentile curves
  • Every measurement saved
A month worth keeping
Report

A month worth keeping

Turn a month of tracking into something you can print, share and keep.

  • 8-page PDF report
  • Story and Post cards for sharing
  • WHO percentiles and leap summary
One baby, both parents
Family

One baby, both parents

Send one invite code and your partner, a grandparent or a caregiver tracks the same baby with you.

  • Invite with one code
  • Premium follows the baby
  • The same timeline for everyone

What Parents Say

Parents rate LittleLeaps 4.9 out of 5; the reviews below come from more than 10,000 parents.

"I couldn't understand why my baby was crying constantly. Thanks to this app, I found out we were in the week 5 leap and it brought me so much peace!"
S
Sarah M.

Mother of 1-Month-Old

"We were exhausted from sleepless nights. Knowing about sleep regressions in advance really prepared us psychologically."
D
David R.

Father of 4-Month-Old

"Simple, easy on the eyes, and gives me exactly what I need. No more dealing with overly complex charts."
E
Emma W.

Mother of 3-Month-Old

Why Upgrade to Premium?

Upgrade to Premium to unlock leap tracking, sleep insights, first foods, development milestones, the monthly report and an ad-free experience. Start with a 7-day free trial.

FeaturesFree
Premium7-Day Free Trial
Expert Articles and Content
Personalized Leap Calendar
Pre-Leap Notifications
Sleep Regression Alerts
Physical Measurements & Charts
Co-Parent Invite
Ad-Free Experience
Audio Article Summaries (AI)
52 Development Milestones
Memories & Firsts with Photos
Unified Family Timeline
Teeth Tracker (20 Teeth)
Daily Play & Activity Ideas
Sleep Tracking & Weekly Insights
First Foods & Allergy Log
Monthly PDF Report & Share Cards
Multiple Baby Profiles (up to 5)

To see how your data is processed while using Premium features, please review our Privacy Policy. For more information on subscriptions and usage rules, you can read our Terms of Use, and if you wish to remove all data associated with your account, you can follow the Account Deletion process.

Leap Preview

This leap preview shows what your baby will experience in four of the developmental weeks: week 5, 8, 12 and 19.

Select Week:

World of Sensations (Week 5)

Your baby's senses are developing rapidly. Everything may seem more vivid and loud. They will cry often and want to be held.

Frequently Asked Questions

The most common questions about leaps, sleep, first foods, milestones and Premium membership, answered clearly with reference to the science.

What is a Developmental Leap?

These are periods of sudden change in a baby's brain development. During these times, they start perceiving the world in a new way, which scares them and makes them fussier (crying, clingy).

Is my data safe?

Absolutely. Your baby's data is securely stored on our cloud servers, ensuring you can seamlessly access your information even if you change your phone. Your health data is never shared with 3rd parties.

Is the app free?

You can read our expert articles and content completely for free. Personalized leap tracking, sleep, first foods and milestone modules are part of Premium, and you can try all Premium features free for 7 days.

What is the price of Premium subscription?

Premium subscription is offered as monthly or annual plans, and both plans include a 7-day free trial. You can cancel anytime during the trial at no charge; current pricing is available on the 'Upgrade to Premium' screen in the app.

Can I add multiple children?

Yes, Premium members can add multiple children to the system and track each one's development separately.

Can I use the app together with my partner?

Yes! You can invite your partner as a 'co-parent' by sending them an invite code from your Premium account. This way, both of you can track the same baby's development in real-time.

Is it suitable for premature babies?

Yes. Our app calculates leap dates based on the due date (40th week) rather than the actual birth date. This ensures perfectly accurate timing for premature babies as well.

How long do sleep regressions last?

Sleep regressions tied to developmental leaps usually last between 1 to 4 weeks. Our app warns you in advance about when this challenging period will start and end.

Is the information scientifically backed?

Our content is based on academic studies published by WHO (World Health Organization) and PubMed. However, it does not replace medical advice, and you should always consult your doctor.

Does LittleLeaps only track leaps?

No. Leaps are one module. Sleep, first foods, 52 milestones, memories, teeth, play ideas and a monthly report live in the same app.

Can I track sleep and first foods?

Yes. Start a nap or night with one tap and review weekly patterns, and log 81 first foods with reactions and allergen notes.

What is in the monthly report?

An 8-page PDF plus a 1080×1080 post and a 1080×1920 story card, covering leaps, measurements on WHO curves, sleep, first foods and milestones.

Independent authoritative scientific sources our data is based on:

How LittleLeaps Calculates Leaps

LittleLeaps calculates every leap from the due date, and the facts below are the basis of each prediction.

Mental leap
A mental leap is a short period in which a baby's brain reorganises itself and the baby starts perceiving the world in a new way. It is often followed by extra crying, clinginess and disrupted sleep.
  • LittleLeaps tracks 14 growth events across the first 75 weeks: 10 mental leaps peaking at weeks 5, 8, 12, 19, 26, 37, 46, 55, 64 and 75 after the due date, plus 4 physical growth spurts at weeks 2, 3, 6 and 16.
  • Leap timing is calculated from the due date (week 40), not the birth date, so it stays accurate for premature babies—who account for about 10% of births worldwide according to the World Health Organization (WHO).
  • A leap's fussy period starts before its peak week: the week 19 leap begins around week 15, and the week 75 leap around week 71.
  • According to pediatric sleep guidance from the American Academy of Pediatrics (AAP) and PubMed studies, a sleep regression tied to a leap usually lasts between 1 and 4 weeks.
  • Growth charts use the WHO Child Growth Standards percentiles from P3 to P97 (3% to 97%, covering 94% of the WHO reference study of 8,440 infants) for boys and girls from 0 to 24 months.

Encyclopedic & Clinical Knowledge Graph Entities: Child development stages (Q1414937) · Child development (Q485537) · Growth chart (WHO Standards) (Q1754580) · Gestational age (Q1519430) · World Health Organization (WHO) (Q7817) · American Academy of Pediatrics (AAP) (Q465697) · PubMed (MEDLINE) (Q180686)

Step into Peaceful Parenting

Peaceful parenting starts here: download LittleLeaps for free and leave no room for surprises in your baby's development.

✨ Try all Premium features free for 7 days · Cancel anytime