Many apps are designed to be deliberately addictive, using psychological tricks that continuously grab your attention. The Center for Humane Technology partnered with Moment, an app that helps people track their screen time, to ask how much screen time in apps left people feeling happy, and how much time left them in regret. Apps were ranked with data collected from a pool of 200,000 iPhone users. This company's Reddit app ranked sixth in the Most Unhappy list, with 58% of users reporting they are "unhappy" with the app and how much time they spend on it, with daily usage averaging 56 minutes.