Children Nutritional Status Calculator is a free Android application that allows users to measure a child's growth based on the WHO Child Growth Standards. The app consists of four calculators - Age for weight status, Age for height/Length status, Height/Length for weight status, and BMI status.

The age-for-weight status calculator requires the input of the child's age in months and weight in kg or lb. The age for height/length status calculator requires the input of the child's age in months and length in cm or inches. The height/length for weight status calculator requires the input of the child's height in cm or inch and weight in kg or lb. Lastly, the BMI status calculator requires the input of the child's height in cm or inch and weight in kg or lb, but only for children aged between 60 to 229 months.

Overall, Children Nutritional Status Calculator is a useful tool for parents and healthcare professionals to keep track of a child's growth. The app is easy to navigate, and the calculations are based on the WHO Child Growth Standards. However, the app lacks additional features such as growth chart visualization and tracking over time.