Prebar is a social networking app developed by Avenir Labs LLC, specifically designed for study abroad students in Barcelona, Madrid, and Rome. The app aims to connect students in these cities and provide them with information about the most active clubs, restaurants, and bars in their respective locations.

With Prebar, students can express themselves and connect with friends by adding photos, their favorite songs, and details about their college or occupation to their account. They can also create groups with their friends, complete with a group song and description. The app allows for group messaging, so once two groups match, everyone from both groups is placed into a group chat together.

One of the main features of Prebar is its focus on helping students learn more about the nightlife in their cities. Users can see the most active bars, clubs, and restaurants, as well as which of their friends have "Opt'in" to a location. The app also provides analytics on the people who have "Opt'in" to a location, including age range and gender.

Prebar is now available for iPhone users in Barcelona, Madrid, and Rome. It is a free app that offers study abroad students a platform to connect with each other and explore the vibrant nightlife of these cities.