DCR-Cashew Nutrition mobile app has been developed by ICAR-Directorate of Cashew Research, Puttur with funding support of RKVY-RAFTAAR, Government of Karnataka. The app is developed to help farmers and other stake holders in calculating the fertilizer requirement of cashew and apply nutrients as per the need of the plant based on soil fertility levels. This shall help to avoid unnecessary excess application of fertilizer which can lead to wastage of money and resources and pollution of environment. Under application of fertilizer to the crop lead to reduced yield. Presently the app is available in two languages (English and Kannada). The app is designed to assess fertilizer requirement in all cashew growing regions of India and can be customized for other locations. This also contain calculator for lime and foliar application of nutrients. Various nutrient deficiency symptoms in cashew and probable management also included.