Repz for Charity is a is a global fitness movement app helping users perform fitness challenges of all levels. Taking an interactive approach with a strong social media focus Repz for Charity created a fun and enticing way to motivate people to get up and stay active. For every completed fitness challenge, the Repz advertising sponsors donate money to different charities. In 2015, Repz for Charity approached Think Tree Studios to help fix and polish their existing iOS and Android apps to increase user engagement, simplify the UI and enhance the social media aspect even further. Thus, Think Tree Studios took on the challenge to improve the Repz for Charity app.