Naturally, through word of mouth. College students are socializing monsters, they are inclined to interact with fellow students more than old boring advertisements. as such an app that holds an event or a challenge would present entertainment to the students leading them to spread it to their friends and social circle, either for challenge or mutual benefit. I would also try to update my app in a non-confusing attention attracting manner. if you give them an addictive substance which benefits them they'd never say no.

fall signifies a drop in temperature and a desire for warmness, as such a bakery stand or a heartwarming event would do better than a rave event or a drinking festival. also consider what I answered for the spring question.