When or how often do I need to enter the growth information like height and weight on the mobile app?

As a child’s growth pattern varies over the various age-groups, there are no standardised recommendations on the frequency for measurements. Generally, it is recommended to measure your child’s growth as part of the scheduled well-baby and well-child health visits. Please consult your doctors/nurses.

As for school-age children, the recommendation is to measure 6-monthly or yearly.