How they compare
Both make taboo and step-family roleplay with adult performers.
Pure Taboo is known for story-led scenes with real plots and acting. It has more than 600 scenes and adds about 50 a year; it costs $19.95 a month or $143.40 a year on its own, and an Adult Time membership includes it.
Taboo Heat is performer Cory Chase's official site. It's much bigger, with more than 1,270 scenes since 2015, and adds two or three new ones a week, but with less emphasis on story.