No Irritating Ads!!! No irritating pop-up!!! BEST app so far with people downloading and using everyday!!! - Good for going world largest Canton Fair - Good for Guang Zhou locals and tourists. NO Data required! Helps to save your data while you are commuting - Latest up to date Metro Map of Guang Zhou - User Friendly, Simple, Fast, High Resolution Guang Zhou Metro Map - Does not require WIFI or Mobile Data - Offline routing with clear map and text views. - Fully Free Metro in Guang Zhou maybe known as Underground, Tube, Subway, MRT in another countries.