The Moena 4d N-body Simulator is a new free tool for running 4d gravitational n-body simulations. It is based on the n-body simulator from Sascha Willems'  Vulkan C++ examples and demos  available on GitHub (https://github.com/SaschaWillems/Vulkan). Like Moena: A 4d Game, the n-body simulator is a work in progress and features are still being added.

Download for free in the "demo" section of the Moena store page.