About this app
The Period of PURPLE Crying app offers a comprehensive library of child development topics related to infant crying, soothing, sleeping, and coping with frustration. It also includes a "Baby Tracker" feature that allows parents to monitor feedings, diaper changes, growth, and crying. This tracker is a valuable tool for recording and observing your baby's progress. The app provides research-based articles, videos, and full-length programs on important child development subjects, including infant crying, sleeping, soothing, and coping with frustration. It is a collaboration between the National Center on Shaken Baby Syndrome (NCSBS) and Dr. Ronald G. Barr, a respected developmental pediatrician and renowned researcher in the field of infant crying. The Period of PURPLE Crying app is increasingly being offered to parents in hospitals, home visiting programs, pediatric practices, and public health offices. If you're interested in accessing the app, ask your nurse or healthcare professional for an activation code. If it's not available through your healthcare provider, you can contact the NCSBS at purple@dontshake.org for assistance.
Latest release
What’s New
Enjoy a refreshed look and feel along with improvements to the baby tracker.
Audience growth
Ratings growth
Baseline captured. Growth appears after the crawler observes a changed rating count.
Momentum comes from crawler snapshots for the tracked storefront. “Viral growth signal” means unusually fast recent rating gains; it is an indicator, not download data.
Price tracking
Price intelligence
First snapshot captured. The trend line starts after the next crawler price observation.
- First observed Aug 21, 2026 · 3:02 PM Free
Screenshots
