SketchUp Pro 15.3 for Mac was available to download from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. The following version: 8.0 is the most frequently downloaded one by the program users.
The software lies within Design & Photo Tools, more precisely 3D Modeling. This software for Mac OS X was originally developed by Google. Please check the Mac app with an antivirus before launch as it is downloaded from the developer's website, and we cannot ensure that it is safe.
From the developer:
Google SketchUp Pro is 3D modeling software for professionals.
SketchUp is easy and intuitive, allowing anyone to model in 3D quickly and accurately.
Using 3D models, designers can make more informed decisions, communicate project details, and share ideas with colleagues and customers to reach a common goal
You may want to check out more software for Mac, such as RiffMaster Pro, Sequel Pro or WASEL Pro, which might be related to SketchUp Pro.
3D Design
3D Design