The Wonder Weeks - Baby Leaps

In-app purchases
3.84K reviews
Content rating
Rated for 3+
500K+
Downloads
Content rating
Rated for 3+
Users Interact
Learn more
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About this app

The world’s No. 1 baby app! Understand why your baby cries more at certain times, isn't himself or herself and... what you can do to help.

During our research, which began in 1971 with Jane Goodall and the chimpanzees in Tanzania, we discovered that babies are more prone to cry and to be clingy or cranky from time to time. This behavior was shown to be related to a leap in the baby's mental development. More specifically, babies go through 10 mental leaps in the first 20 months of their life. A leap may be tough, but it's a positive thing: it gives your baby the opportunity to learn something new.

Use The Wonder Weeks app to:
- See when a leap starts and ends thanks to a personalized leap schedule
- Be automatically notified when a leap is about to start
- Learn to recognize the leaps based on the various signals your baby gives
- Discover the new skills your baby develops with each leap
- Stimulate your baby's new skills with 77 playtime games
- Keep track of your baby's development in your personal diary
- Link the app to your partner's app to keep track of your baby's developments together
- Share your experiences and ask questions in the forum
- Watch fun and interesting videos about parenting
- Complete fun polls and find out what other parents think about certain topics


Our mission is to help parents gain confidence in the face of the greatest leap in life: having a baby. We take a candid look at parenting, shed light on all sides and are there for all parents. We can all help each other and learn from each other.

Millions of parents before you have already followed, supported and stimulated the 10 leaps in the mental development of their babies. It's not a coincidence that we have been one of the best-selling baby apps worldwide for many years!

Disclaimer: This app has been developed with utmost care. Neither the developer nor the author is liable for any damage resulting from inaccuracies or omissions in this app.
Newborn milestones & Baby development leaps | Leap days tracker, schedule & tips
Updated on
Jul 21, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • This app may share these data types with third parties
    Location, Personal info and 4 others
  • This app may collect these data types
    Personal info, Photos and videos and 3 others
  • Data is encrypted in transit
  • You can request that data be deleted

Ratings and reviews

3.83K reviews
Nicole Körndl
August 24, 2026
I love it. It is so nice to have one place/app with information, explanations, ideas for playtime, tracking milestones and giving parents a rough overview and timeline for leaps. We all are running around with our phones - the app is so convenient. I also love the group chats - it is so nice to write with other parents.
1 person found this review helpful
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The Wonder Weeks
August 25, 2026
Thank you for sharing this! We're so glad you enjoy having everything together in one place, from information and playtime ideas to milestones and leaps. It's also great to hear that the group chats help you connect with other parents. Thank you for being part of our community!
Ekalesvara Caitanya das
September 14, 2026
Tbh, this app is practically pointless/meaningless because the range of when your baby can enter and leave a phase is so wide it is impossible to actually know where they are. I wouldn't recommend the app especially for the price. The app takes advantage of desperate parents who need help but delivers very little.
1 person found this review helpful
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The Wonder Weeks
September 14, 2026
Hi, we work hard to empower parents worldwide, and we're truly sorry to hear that we didn't meet your expectations. If you have any suggestions for improvement, we’d love to hear them. Please email us at support@thewonderweeks.com.
Jessica Clarke
August 14, 2026
It seems like it could be a decent app. I don't really care to find out when my child is fussy. I'm a little disappointed that I had to pay before finding out what the app was about. There are games and a general explanation of phases, but I think I'm looking for something more concrete.
2 people found this review helpful
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The Wonder Weeks
August 19, 2026
Hi Jessica, thank you so much for your feedback! We really appreciate you taking the time to share it. We’ll take your feedback into account as we continue improving the app to offer an even better experience for all users.

What’s new

We’ve made a few minor improvements and fixed some bugs for a better app experience.