GPX Viewer PRO boasts an extensive array of features tailored for both casual and professional use. The app's core functionality revolves around its ability to handle multiple file formats including GPX, KML, KMZ, and LOC. Users can view tracks, routes, and waypoints while enjoying the convenience of a built-in file browser that supports favorites and history. Advanced compression options allow users to compress GPX files into GPZ and KML files into KMZ formats, optimizing storage and sharing capabilities.

Beyond basic viewing, GPX Viewer PRO provides detailed analytics through graph visualizations such as elevation profiles, speed charts, and additional metrics like cadence and heart rate. The app also integrates seamlessly with Trackbook for synchronization of tracks and waypoints. For those requiring offline functionality, the app offers detailed worldwide vector maps with customizable styles suitable for various terrains. Furthermore, users can engage in track recording with adjustable profiles for different activities, receive voice notifications, and utilize simple navigation tools that adjust map orientation based on device sensors or GPS movement data.

Map accuracy is a crucial feature for any navigation app, and GPX Viewer PRO excels in this area. The application offers both online and offline maps with impressive precision. Online maps include popular services like Google Maps, Mapbox, HERE, and Thunderforest, all based on OpenStreetMap data.

For offline use, the app provides detailed worldwide vector maps that are updated monthly to ensure improved data accuracy. These offline maps come in various styles tailored for city and outdoor activities, giving users reliable information regardless of their location or internet access.

The integration of OpenWeatherMap layers adds another layer of accuracy by providing real-time weather data overlays. This combination of precise mapping services ensures users can trust the map's reliability when planning trips or engaging in outdoor activities.

Route planning is an essential aspect of GPX Viewer PRO, making it more than just a map viewer. The app allows users to view tracks, routes, and waypoints from GPX, KML, KMZ, and LOC files, offering comprehensive tools for analyzing trip statistics. Users can examine graphs such as elevation profiles and speed profiles, which are critical for effective route planning.

Additionally, GPX Viewer PRO functions as a simple navigation tool. It continuously follows the user's GPS position, adjusting the map accordingly and even rotating it based on device orientation or movement direction. This feature helps users stay on course during their travels.

With capabilities to create and edit tracks, split or merge them, and add waypoints, users have extensive control over their route planning. These features collectively enhance the user's ability to plan and execute trips efficiently, whether for leisure or professional purposes.