According to The Wonder Weeks site, the app helps you support your baby during "leaps" or milestones. It includes a diary to keep track of your baby's progress, an alarm to notify you when your baby is approaching a leap, and a personalized schedule. You can also look back on your little one's first year, sort of like a baby book.
Extras are available for purchase, such as an e-book or audiobook in full or single chapters, music and white noise to promote healthy sleep, and a 4G WiFi baby monitor. The app has received multiple awards, including Apple's Top 10 best of the year 2016 in several countries, according to The Wonder Weeks website.
Also, note that the handy app can be used successfully without purchasing the book (via Healthline).
The Wonder Weeks refers to your baby's age in weeks. Most parents won't know off-hand that their 6-month-old is 26 weeks. The app keeps track of this for you. With 4.9 stars in Apple's app store, the Wonder Weeks is available for $4.99.
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