How is this different from Squarespace or WordPress?

Squarespace and WordPress are general website builders. You start from a blank site and add every episode, transcript, and clip by hand, and there are no podcast tools in the box. Podspun is made for podcasters and creators: connect your channels once and it arrives with your whole catalog, transcripts, search, and clips already in it. You keep full design control and your own domain, and the approach is a two-time Webby honoree.