ForeFlight Mobile offers composite radar imagery. Composite radar displays radar returns from various elevation scans. The strongest returns from the numerous elevation scans are compiled into a single map layer and displayed on the map according to their reflectivity. Composite radar imagery is available from the internet, ADS-B, and Sirius XM when the Radar, Radar (ADS-B), or Radar (XM Comp) map layers are selected, respectively.
Composite Radar (Internet)