What is "titstare"

Titstare is a fictional mobile application centred on pictures of men staring at women and their breasts. It was introduced at a 2013 hackathon at TechCrunch's TechCrunch Disrupt conference in San Francisco, California. Titstare became the subject of public controversy, described by some as symptomatic of sexist attitudes in Silicon Valley's startup culture, and others as brilliant satire. Conference organizers later apologized for the "misogynistic" presentation.