True to its name, the city mapper app shows you an updated map of the various transport options in Istanbul. The app shows you updated fares, routes, and Metro, bus, trams, and ferry routes. It can also calculate taxi fares and show you cycling routes.

Grab is a popular app used in most Southeast Asian countries. It is ideal for you if you are planning to travel solo. Along with being a ride-hailing app, Grab also has a food delivery service, and cashless payment solution.

The best way to travel through Spain is to keep Google Maps in your phone. You can also download offline maps of some places that you want to travel to so that you can travel without the need of mobile internet or WiFi.

Although most people in Greece do speak English, some locals and residents of the islands may have trouble conversing with you. Download Google Translate on your phone to make conversations like asking for directions or just simply wanting to know somebody far more easier.