A minimal, official-source-checked app setup for maps, translation, emergency information, taxis, and official travel guidance—without assuming that you already have a Korean phone number.
Choose AREX, an airport bus, or an official taxi by your terminal, actual Seoul address, arrival time, luggage, and group size—with a backup route.
A passport-specific decision guide for checking whether you need a Korean visa, K-ETA, an e-Arrival Card, and any route-dependent health or customs declaration before travel.