Clinical Review

Three good apps for calculating the date of delivery

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First up: Apps for calculating the date of delivery. This first app review focuses on pregnancy wheels, or due date calculators. Calculator apps are preferred over other types of apps such as procedure/case documentation apps, as providers use smartphones at point of care to allow rapid decision making.3 Calculating the estimated date of delivery (EDD) and gestational age (GA) is an important, vital task for providers of obstetric care. In fact, new guidelines for calculating EDD were recently developed by the American College of Obstetricians and Gynecologists (ACOG), the American Institute of Ultrasound in Medicine (AIUM), and the Society for Maternal-Fetal Medicine (SMFM).4 Notably, pregnancy wheel apps are more accurate than paper wheels.5 My team checked the accuracy of the pregnancy wheel apps by applying strict criteria to ensure the correct EDD and GA and then scored them in a systematic, nonbiased, conflict-of-interest-free manner.2

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The TABLE below lists the top 3 recommended pregnancy wheel or due date calculator apps vetted by our research. The apps are listed alphabetically, and details for each app are provided based on a shortened version of the APPLICATIONS scoring system, APPLI--app comprehensiveness, price, platform, literature use, and important special features.

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