A spontaneous hangout app where users can add friends and send them an invite to a hangout (e.g. ice cream at Fosselmans in one hour). They can set a hard cap on how many people can go, and everyone who is invited can RSVP to fill up that cap and see everyone else who RSVPd.
Targets young people (likely students) who find themselves wanting to spontaneously hang out with their friends but not knowing who is free.