Renders your GPS route as a line with a moving dot. Two modes: overview (full route) and follow (zoomed in, tracks you).
Reads latitude/longitude from your FIT file and renders a route line. No map tiles or internet needed - it draws from raw coordinates.
Overview mode shows your full route with a dot that moves along the path. Follow mode zooms in and moves with you.
Follow mode has a configurable zoom level (radius in meters). Smaller radius = more zoomed in.
Track smoothing reduces GPS jitter. Trim lets you crop the start/end of the route.