Recommended Dietary Allowance(RDA) is the average daily dietary nutrient intake level sufficient to meet the nutrient requirement of nearly all (97 to 98 percent) healthy individuals in a particular life stage and gender group. RDA for Indians is prescribed by NIN(ICMR) Hyderabad. RDA Calculator Urdu app is based on “Nutrient Requirements and Recommended Dietary Allowance for Indians” book published by NIN(ICMR) in 2010. For further information, the book can be procured from NIN’s publications counter at NIN Hyderabad or from ICMR, New Delhi.