Chinese tool apps, from outfit-swap filters to calorie trackers, have surged to become top downloads worldwide. Their success stretches from the competitive markets of the U.S. and U.K. to the booming digital landscapes of Southeast Asia and Latin America. This global reach, however, presents their greatest challenge: can they master the vastly different tastes and cultural nuances of users from Los Angeles to Jakarta to maintain their dominance? On the show: Heyang, Steve Hatherly & Yushun