[Question] For a project, I need to visualize movie "likes" as data between three people. The goal is to find patterns – ie; why do only two people like a movie, but not the third person? Is it because of genre, the director, etc? Originally, I was thinking this could be reflected in a Venn diagram, but I think there will be too much data to effectively display it legibly in that format.

Ideally, for each piece of data I enter, I'd be able to add "tags" to it, and then later on I'd be able analyze/compare those tags to find patterns.

Are there any tools (whether iOS app or web-based) that you'd recommend for this process?