For first time travellers, travel apps are really useful. The train maps might look daunting because it’s so complicated, and it surely doesn’t help when there are Korean words on it, making it look even scarier. You’ll be glad to know that train line map apps like Seoul Metro and Busan Metro Map will save your life here in Korea. For more travelling and food tips, they also have a VisitKorea app that is pretty useful too!