The Lives Saved Tool (LiST) enables policymakers and technical stakeholders to estimate the impact of scaling up intervention coverage on undernutrition and mortality. This study used LiST to model the impact of scaling up programs in India between 2006 and 2016 and subsequently compared them to the observed impact during the same time period. Although estimates from the use of the LiST tool were close to actual values observed, there remain challenges with the tool itself and its applications.