The app for your baby’s leaps!

The Wonder Weeks App

Why is my baby crying? Many young parents are facing this question. During our research into the 10 mental leaps of babies, we discovered that all babies are from time to time more prone to cry, cling and be cranky. A leap may be stressful at times, but it is something positive: it gives your baby the opportunity to acquire new skills! All this information and more is bundled in our app.

With our app you
have everything
in hand

Your personalized baby leap app

Your personalized baby leap app

The app generates a personal leap chart for your little one. The chart will provide you with information about the leaps of your baby. It will:

  • Show when a leap starts
  • Show when a leap ends
  • Show when it’s time for the fussy phase of a leap
  • Show when it’s time for the skills phase of a leap
  • Show when your baby is going through an “easy spell”
  • Send you an automatic notification when a leap is about to start
"As a new parent, the Wonder Weeks app has been super helpful. It help me navigate the ups and downs of my baby's behavior".

With our mental leap app

With our mental leap app

  • You will learn to understand your child better
  • You will know exactly when a leap of your baby is about to start
  • You will recognize the leaps through the different signals of your baby
  • You will discover the new skills that your baby may develop during each leap
  • You can stimulate the new skills of your baby with 77 playtime activities
  • You can track the development of your baby in your personal diary
  • You can share the app with your partner to track your baby’s developments together
  • You can share your experiences and ask your questions in the forum

Baby leap chart

During our research into mental leaps, we discovered that this phase in which your baby cries more frequently and shows a different behavior than normally, can actually be predicted quite accurately almost up to the very week based on the due date. Discover the leaps of your baby on our website, using our baby leap chart.

More about leaps
Leap 1
From week 4, your baby enters leap 1, the world of sensations. The first signals of your baby’s first leap will appear between weeks 4 to 6 after the due date.
More about leap 1
Leap 2
From week 7, your baby enters leap 2: the world of patterns. Your baby could show the first signals of leap 2 between week 7 to week 10 after the due date.
More about leap 2
Leap 3
Around 11 weeks, you may see signs of the next leap approaching: leap 3, the world of smooth transitions. Your baby is acquiring yet another new skill!
More about leap 3
Leap 4
From week 14, leap 4 starts! The first signals of leap 4 will appear between weeks 14 to 20 after the due date. During leap 3, your baby learned to see several smooth transitions, patterns, or sensations without seeing any connection.
More about leap 4
Leap 5
From 22 weeks, your baby enters the world of relationships. Welcome to leap 5! Leap 5 is no small leap. This is a giant leap! Why? This leap enables your baby to perceive the relationships between all the earlier leaps.
More about leap 5
Leap 6
From week 33, the world of categories will be knocking at your door, leap 6. The first signals of leap 6 will appear during weeks 33 to 38. Once your baby can perceive “categories”, they will realize that they can divide the world into groups.
More about leap 6
Leap 7
Around 41 weeks, the world of sequences is just around the corner. Welcome to leap 7! Between 41 and 47 leap 7 will start. While your baby mainly studied things by taking or tearing them apart during the previous leap, they will now be rather “constructive” after this leap.
More about leap 7
Leap 8
Hip, hip, hooray! During this leap, your baby will celebrate its first birthday. Your baby will not only make a leap in their mental development but will also turn form a baby into a toddler!
More about leap 8
Leap 9
Around 59 weeks, you may see signs of the next leap: leap 9. Welcome to the world of principles. If your toddler has taken the leap, you will notice that they are running all kinds of “programs” more smoothly, more naturally and more clearly.
More about leap 9
Leap 10
Around 70 weeks, your toddler is ready for a new leap into the world of systems: leap 10. The last leap, at least the last one we have recorded. In leap 10, you can now observe your toddler becoming aware of systems after making this leap!
More about leap 10