TornadoFX is just a Kotlin wrapper around JavaFX. It makes writing apps much nicer, but has considerable cost in terms of even more memory usage and, obviously,

TornadoFX is just a Kotlin wrapper around JavaFX. It makes writing apps much nicer, but has considerable cost in terms of even more memory usage and, obviously, due to the Kotlin runtime and lots of Kotlin wrappers for most JavaFX classes, app size.