Show HN: User return analysis in Stackoverflow, Insta, H&M (app.topdatalab.com)

I processed a lot of open data from Stackoverflow, Instagram, H&M, and others. I'm interested in how users return to make their actions: to write posts, to make a purchase, to answer a question.

This data can be valuable for startups to develop their business models as repeat users are the core of any business.