While IndoorAtlas MapCreator uses Mapbox to visualize the floor plans and the position on the floor plan, IndoorAtlas positioning SDK is independent of the visualization toolkit. The SDK provides you with WGS84 coordinates  (lat, lon) and floor number. You can use any 3rd maps provider to display the position and/or any other visual objects related to your application. 

Our Android example repository contains some complete "build and run" examples: 

1. Google Maps Example with Floor Plan Overlay

2. Open Street Maps

3. Google Maps Overlay with IndoorAtlas Wayfinding