Mobile navigation is becoming more than just car navigation, with pedestrian and multimodal navigation growing in importance. While handset-based navigation has advantages like always being with the user and connectivity for up-to-date content, disadvantages include challenges integrating with vehicles and interfaces not optimized for in-vehicle use. Major providers of mobile mapping and navigation apps include Google, Nokia, Telenav, and TomTom, with approaching 200 million global users in total. Business models are evolving from trial/buy options to bundles with devices/plans and low-cost/free apps supported by premium features and advertising. Future challenges include differentiation, user engagement, and appropriate monetization strategies.