Synchro is a 4D (3D drawing + time /scheduling) application that allows you to create and animate the construction schedule of your project. The 3D drawing from SketchUp is tied via a plugin to each stage of the project schedule in the Synchro application such that the PM can view project progress as a 3D model, in addition to a traditional Gantt Chart representation. The plugin allows you to bring geometry from SketchUp into Synchro with a unique ID attached to each component. This gives users the ability to make changes in their SketchUp models and port those changes back to Synchro while iterating on designs.
Product director Stephan Jones gives us the full scoop in this video. This footage is provided courtesy of Construction Software Advice.