Meetup - Helps groups of people with shared interests plan events and facilitates off line group meetings in various localities around the world.
PanoramaCrop for Instagram - PanoramaCrop for Instagram is a free photography app that allows you to easily splits your wide photos so you can make the most out of the new Instagram’s multi-photo images, created and published by Muffin.
Eventbrite - Discover Great Events or Create Your Own & Sell Tickets
King Camera - Cam 360 Selfie Camera, King Camera is one of best, a professional selfie camera app that takes beautiful selfies in seconds with effects filters.
Calendify - Calendify is an event community where you can share, publish, and subscribe to event calendars. It helps you to stay informed about what you are interested in and what is yet to come.
Cool Gram - $5 a month makes your IG officially cool.