What are the best apps for offline navigation (driving, walking, and public transport) on each of the mobile platforms? On Android & iOS I'm aware of some paid apps which do a good job of offline driving & walking navigation (e.g. Co-Pilot), but I don't know about offline public transport route planning. This is often the thing I want when I'm abroad. On Windows Phone, do the HERE apps provide offline public transport route planning, or it it only for walking and driving?