Options for, and farmer decisions on, the level and composition of production inputs often determine whether a farm enterprise prospers or fails. More intensive and efficient use of agricultural inputs -including better technologies and farmer know-how - are fundamental ingredients for the type of sustainable intensification that experts now see as a key to the future of smallholder farming and national food security in Africa. But extremely limited access to and use of improved seeds and fertilizers, irrigation, small-scale mechanization, and reliable sources of advice, credit, market information and other inputs continue to predominate in smallholder agriculture. HarvestChoice compiles and conforms input data, primarily from household surveys, analyzes spatial and temporal trends in input use and, especially in the case of fertilizers, evaluates spatial patterns profitability under different use scenarios. This will aid practitioners in designing spatially-specific interventions to increase access to and use of production inputs.