A hydrotherapy jet includes a jet body having an open upstream end and an open downstream end and defining a flow path between the open upstream end and open downstream end, a flapper disposed within the flow path, the flapper having upstream flapper and downstream flapper ends and rotatably connected to the jet body at the upstream flapper end to rotatably oscillate about the upstream flapper end when a stream of water is introduced from upstream to downstream through the flow path and a head spoiler formed on the downstream flapper end to reduce the frequency of oscillation of the flapper wherein a stream of water pulsating effect is felt by a user of the jet apparatus adjacent the open downstream end as the flapper rotatably oscillates.
