A casual poll of smartphone-owning parents by Live Science revealed that when they do use apps, they download ones they feel are important for their baby's health and happiness, as well as their own sanity. Certain color stools, such as those that are white, clay-colored or light yellow, could signal the baby has a rare liver disease called biliary atresia, or other problems, according to a color-coded stool guide by the Johns Hopkins Children's Center. But to provide worried parents with a professional opinion, this spring the Johns Hopkins center debuted a free app called PoopMD that has color-recognition software, so parents can take a photo of what they’re seeing and get feedback right away. For checking a broader range of a baby's health, the free WebMD Baby app for Android and Apple devices allows parents to look up numerous symptoms.

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