Roomster Is your first and last stop for Roommates & Rooms for Rent. 5M Downloads. Find roommates and rooms for rent at any price and budget in 192 countries. Roomster’s in-app messaging makes it easy and safe to chat with potential roommates. Post a place for rent, or that you need one and your matches will message you. With 24/7 customer service and an always expanding community of users, roomster is a way for people to monetize their extra space and make it available to all its members. W