The “GrowthPlot” app plots selected growth parameters (length/height, weight, body-mass index, weight-for-length and head circumference) for typically growing children (using either the “WHO Growth Charts for Canada, March 2014 revision” or the “2000 CDC Growth Charts” reference. You can also plot selected growth parameters (length/height, weight, body-mass index and head circumference) for children with a number of syndromes (Turner, Down, Noonan, Prader–Willi and Russell–Silver) using the QuickChart API, which results in a link which allows you to save or share the chart image. Citations are provided for each reference range used for these calculations.