Not that interesting because they'd be obvious trolls. How about an app that purports to give support and counseling people who are questioning their sexuality,

Not that interesting because they'd be obvious trolls. How about an app that purports to give support and counseling people who are questioning their sexuality, in two versions, with one for straight people who think they might be turning gay, and the other for gay people who think they might be turning straight? If one of them is denounced as homophobic and the other is approved, you could be on to something.