The Factual API is only accessible through the Engine mobile service for Factual. Engine is a mobile Location Intelligence SDK that enables you to engage users in the right place at the right time. It allows you to request an alert if the device enters a location-based Circumstance, and ask which businesses or places of interest the device is currently at or near. Factual is an open data platform for application developers that leverages large-scale data aggregation and community exchange. For more information on the SDKs, check the SDK tab below.