Image-O-Matic was the first Boost Your BIM app and remains one of the most popular!
Click here to purchase the 2015 version. A URL for the software download will be sent shortly after your purchase is completed.
You can use Image-O-Matic to generate images by varying values related to instance parameters or displacements sets, or create an image for each phase in your Revit model.
This video shows it in action with displacement sets.
And here is an animation created by using to vary instance parameters
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