Coolest n-body simulation EVER!

This n-body simulator is amazing! Ive played with a bunch and even written a few in my day. This one beats the bunch. Worth every penny of the 99¢ being asked for!

There are so many options that can be manipulated via the keyboard during the simulation. Plus any sim can be played back at a much higher frame rate after its been recorded. (Recording happens by default during the sim.

VesperDEM about Gravit