Tools

Three questions on this site cannot be answered in prose, because the answer depends on your own numbers. Each one carries figures copied from the article it was checked against, on the date stamped beside it.

• Does a Climate Card pay for itself? verified 20 Sept 2026

  Work out whether a Seoul Climate Card pass beats paying per journey, counting transfers the way the fare system does rather than the way other guides do.

• Do you file the e-Arrival Card? verified 14 Aug 2026

  Six questions against the ministry’s own two lists. A visa overrides a K-ETA and your age counts on the day you land, which is why the obvious answer is often wrong.

• Do you need a Korean phone number? verified 21 Sept 2026

  The connectivity question is not how fast or how cheap. Tick what you actually plan to do in Korea, and a data-only eSIM either covers it or locks you out.