Spatial analysis is often used in urban projects, but most often it focuses only on the analysis of the current situation, so that architects understand the urban context of their projects, because mapping the effects and consequences of future development (scenario testing) is time-consuming.

 In some projects spatial analysis is used to analyze ready-made masterplans at the later project stages when any changes are too late to make. 

Analysis that allows for a quick assessment of potential project effects and supports evidence-based design is rarely used for the following reasons:

• Conventional spatial analysis requires separate GIS expertise. 
• GIS analysis tools are not user-friendly for designers, since they are mostly developed for researchers, who work in different timeframes and do not need to incorporate sketching in their tools or to quickly compare different design alternatives. 

As a result, the tools for evidence-based design tend to be monopolized by independent consultancies, while in practice, many architects are left relying on their intuition rather than on empirical support for their decisions.

Urban Calculator steps in as a practical solution to these challenges. It enhances the early-stage design process by allowing architects to sketch and immediately test if their design solutions would work and support the initial goals of the project.