I like their approach to meet people. You get automatically dropped into interest groups and it's all anonymous. The barrier to meet up is quite as you have a common interest and it is in group.
We3 - AI that finds you the most compatible people nearby
FriendZone - Make new friends based on your interests and hobbies
Meetup for iOS and Android - Discover groups that are all about the things you love
AiryCam - Look good in every photo
Yubo: Make real friends live - Yubo: Make real friends live is a social networking app to enable you to start a live video chat with up to 10 different users at the same time by sending the link of the chat to them.
Open Camera - Open Camera is an open-source camera app for Android phones and tablets.