Why don’t popular apps in Korea work in the UK?

Apps behave differently across markets, so Korea-to-UK comparisons show that ordering, rewards, and payment habits don’t automatically transfer.

Starbucks, Siren Order, and Karrot illustrate how local user behavior can reshape app adoption and product-market fit.

The article recommends Customer Journey Shadowing to observe real customer journeys before building or testing new-market hypotheses.

This observation-first approach helps teams uncover local pain points and design better localization strategies.