GPX M Viewer and Route Editor processes data from single or multiple input files and filters the content based on GPX types: waypoints, tracks, and/or routes, or by an individual route or track. The application presents route and track summaries, including distances, start times, durations, and average speeds. Filtered data is displayed on Apple Maps. The selected or newly created route can be edited either on Apple Maps or OpenStreetMap, optionally with OpenSeaMap overlay. As a multi-platform application, it operates on iPhones, iPads, and Macs.