Influenster is a product discovery and reviews platform that uses social media analytics to measure its users’ influence on social media. More specifically, Influenster quantifies its users' influence via "Social Impact", which tracks the number of friends, followers, or subscribers a user has. Based on a user’s Impact score and demographic, he or she can then be invited to campaigns run by Influenster featuring digital and material rewards from consumer brands, most popularly the "VoxBox" or a boxed shipment of products to sample and complete a survey about. Influenster launched in 2010. An iOS app for Influenster launched in 2014 while an Android app launched in 2015. As of August 2016, Influensters community consists of more than 2 million users. Influenster is also on the Inc. 500 list of fastest-growing private companies in the US in 2016. Influenster uses Facebook, Twitter, Instagram, YouTube, Tumblr, Foursquare, Google+, a multi-platform blog widget, and friend referrals to determine Impact score. Impact points are largely calculated based on the amount of followers or friends a user has on any given social network. The only exception are the one hundred points rewarded for using the blog widget, and the points rewarded for referrals. Influenster allows users to unlock "Expert" and "Lifestyle" badges through completing survey questions about their interests and behaviors, writing reviews on products, answering other users' questions, and sharing Influenster product pages across social media channels. These badges are a part of a gamification system to reward specific types of users with invites to specific Influenster campaigns matching their demographic. Influenster also awards decorative badges to its users for participating in campaigns they are invited to. Depending on the campaign, these badges may have additional prize incentives to unlock them.