Mobile UXfromThe Verge1 week agoDuolingo is replacing hearts with energyDuolingo is shifting from a hearts system to an energy system to promote learning motivation rather than penalize mistakes.
fromMedium6 months agoWhy over 100 million athletes are hooked on StravaThe activity feed is essential for social engagement, enabling users to celebrate personal victories and share stories, such as 'Finally Beat The Hill!'.Miscellaneous