Key features: 1. All maps are offline. No internet connection required. 2. High resolution map. Station name are clear and big enough to identify. 3. Can zoom in, zoom out and scroll vertical and horizontal. 4. Easy to use. Quick to find your place. 5. Free of charge. This app includes: 1. Singapore Metro MRT Map 2. Changi Airport access 3. CHANGI AIRPORT DINE SHOP