The Wonder Weeks
Understand why your baby cries
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The #1 baby app worldwide! Understand why & when your baby suddenly cries more than usual, is not themselves and… what you can do to help.

Your baby is suddenly crying all the time, clinging to you, and you ask yourself what is wrong. The good news is that this fussy crying phase is a sign of progress in the brain!

Millions of parents have gone before you in following, supporting, and encouraging the 10 leaps in the mental development of their baby or babies. It is with good reason that Apple has declared it to be in the top 10 of the “Best sold apps in 2018, 2019 & 2020”

- Learn all about the 10 mental leaps with tips, tricks & mind-blowing insights.
- Your unique personalized leap schedule shows when a leap starts and ends, and… it counts down for you.
- Discover how you can give your baby the help they need during the various stages of a leap.
- Know when you can expect new skills.
- Keep track of your baby’s development and milestones in the diary.
- Gain insight into your baby’s perception of the world.
- Experience the world through your baby’s eyes.

- Over 350 extra milestones to keep track of in your diary
- Baby monitor: Wi-Fi 4G (INCLUDING 7 chapters on sleep from the book)
- E-Book (in full or per chapter)
- Audiobook (in full or per chapter)
- Music to lull your baby to sleep (white noise & music)

- Declared by Apple to be in the top 10 “Best sold apps in 2018, 2019 & 2020”
- Most downloaded paid app in Health and Fitness
- Award for “Coolest App for Moms”
- “Choice & Gold” Award from users, MumIi
- AppRx Awards Top 10 “Children’s Health App”
- NHS (UK) – “Best App for Parents”

Especially for parenthood. The baby tracker for your baby’s leaps in their mental development. You can keep track of your baby’s milestones and your baby’s growth in our The Wonder Weeks! baby tracker. A leap for you and your baby.


Disclaimer: This app has been developed with the greatest of care. However, neither the developer, nor the author is liable for any damage caused by inaccuracies or incompleteness of the app.
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The Wonder Weeks
eBook - Chapter 1
eBook - Chapter 2
eBook - Chapter 3
eBook - Chapter 4
eBook - Chapter 5
eBook - Chapter 6
eBook - Chapter 9
1 Month Subscription
6 Month Subscription


User Rating

4.86 out of 5

106,876 ratings in United States

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Ratings History



Jordanpaige.123.8 on

10/10. Always accurate. Perfectly timed with each leap. This is our second baby and this app has saved my life. I wish all of our parents could've had this to help them when we were babies!!

Initially great but has become a source of stress

WaitIHaveToHaveANickname on

Initially we found it really helpful and encourage other parents to understand leaps. As our baby has grown, the leap skills and signs have become less and less helpful and have started stressing us out. I still think k the understanding is great and the suggestion on games and leap descriptions as well but the sense that your baby is missing milestones isn’t great for us so we’ve really stopped looking at them. We feel that the leaps are too aggressive and something like Lovevery is more realistic at least for us and our baby.

The best!

BWolly17 on

Amazing! With my second I was struggling through her leaps without realizing why, after I discovered the Wonder Weeks app it all made sense! Now with my third we can predict and work through each of the leaps without frustration. And added fun with games!

Te brinda mucha información

Dzj0000 on

Es súper informativa y de buena calidad y de verdad te ayuda como padre a entender un poco las incomodidades o los logros de tu hijos

Thank God for this app

Marie Vent88 on

I would be lost without this and I’ve been in childcare for 10+ years and this has been an eye-opener

Easy way to plan around babies schedule!

MB93_x2 on

The Wonder Weeks is an amazing, effortless way to keep track of your babies milestones. It literally helps me plan my schedule around how baby may be feeling. Literally the most accurate dates yet!

Not worth the money

ElizPittman on

The milestones are not accurate in the slightest, and everything you get in this app you can get for free from Google. Hate that in wasted money on it.

Not Worth The Price

brittgail87 on

Unimpressed with this app.

Great but not entirely necessary

Amber MH on

LOVE Wonder Weeks! While it’s not accurate to the day, it’s usually right in the surround weeks. It’s nice to have a good idea of what baby is going through, but my absolute favorite is the game suggestions to play with baby to help with the specific developments in the leap they are in!


Arianearaujoeua on

Maravilhoso app, explica com detalhes e avisa antes o dia certinho de cada salto e duração. Super recomendo

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App Info

Domus Technica BV
English, Arabic, Danish, Dutch, French, German, Indonesian, Italian, Japanese, Korean, Portuguese, Russian, Chinese, Spanish, Swedish, Turkish
Recent version
11.2.7 (6 months ago )
Released on
May 30, 2012 (11 years ago )
Last updated
6 days ago