Adobe Aero
Adobe Aero is a visual, fairly intuitive way of creating AR experiences that can be experienced on iOS and developed using macOS or Windows (both in beta). It allows creators to place, scale, and rotate existing or stock 2D or 3D objects directly into virtual space as well as programming basic action sets for user interactivity.
While it is an easy way to create interactive AR experiences, users have to have an iPhone or iPad to experience them and the desktop creation apps are still fairly buggy.
COST:
Free (no Creative Cloud subscription required)