Dandelion
A star cluster in the Galaxy's tidal field is a dandelion clock: the tide plucks stars past the Jacobi radius into two long tails of seeds.
Dandelion is a direct N-body star cluster simulator with Milky Way tides and tidal tails: every point of light is one star, integrated on your GPU. It now lives as a native app for iPhone and Mac. The browser version has been retired.
Dandelion is free on the App Store for iPhone and Mac.
The physics notes and references remain available: the physics document. See also the privacy policy.