RendezVu is described as 'finds the most convenient area for you and a friend to meet up in a city based on travel time, then offers suggestions on the best spots in that location' and is an app in the Travel & Location category. There are three alternatives to RendezVu for Android and Online / Web-based. The best alternative is Mapple.me, which is free. Other great apps like RendezVu are Viewbubble (Free) and meeba (Free).
Mapple.me bridges the gap between available time and availability of friends to increase social contacts in real life by simply using the mobile device in your pocket. Even with those friends you might not think of or you‘ve lost touch with.
See who is around you right now and where to find them online! Viewbubble is a small geolocation application for Android, scan the area around you to get a list of people. Visit their blog, twitter, dating site or why not say "hi" directly with Viewbubble mail!