it's a max4live midi effects bundle.
Max for Live
A MIDI arpeggiator/sequencer device that mimics Henry Cowell and Léon Theremin’s Rhythmicon (1931), the world’s first electronic drum ...
This is a software built entirely in Max/MSP.
Than the step sequencer or Arpeggiator, is a tool to more easily, can be more intuitive, make a loop phrase.
This is a Midi ...
PM.Pong does for floats/ints/lists what pong~ does for signals.