  Neutron capture-induced nuclear recoils have emerged as an important tool for
detector calibrations in direct dark matter detection and coherent elastic
neutrino-nucleus scattering (CE${\nu}$NS). $\texttt{nrCascadeSim}$ is a
command-line tool for generating simulation data for energy deposits resulting
from neutron capture on pure materials. Presently, silicon, germanium, neon,
and argon are supported. While the software was developed for solid state
detector calibration, it can be used for any application which requires
simulated neutron capture-induced nuclear recoil data.
