Scout is a passive app which allows you to know when your friends are in a certain geolocation. The best explanation is always an example so here you go.
Youre on a college campus but dont know whos around. You have 3 choices.
A) Text each of your friends (Thats annoying for you)
B) Send to a group chat (Thats annoying for them, also who said you want to hang with any of those people)
C) Open scout.
C seems like the best option.
Once you open scout, your informed of all your friends who are currently in the set location. Once you know whos on campus, send them a text to hang out.
1, 2 and no 3. Its that easy