> I may be open-minded

You're not. If you were you will understand that astrology and other esoteric beliefs are culturally anchored to the human experience of many people in the world. In particular the self-development that many people seem to get from astrology. I don't need to believe in astrology to understand its cultural role.

I think it's completely fair to build a business around a cultural idea and use that idea as a thematic glue to teach people about self-development and self-care. If you donwload the app, you will quicky realize that's exactly what they are doing. Personally not my thing, but I respect what they do and their approach to building a business around this.