
Your onX export
Pick the file.
Groundwind reads it and shows what's in it before anything is kept.
From onX
Keep onX for the map. Export your waypoints, tracks and lines, import the file into Groundwind, and every stand you've marked shows the wind and thermals at head height, and where your scent goes from it.
The file goes to your phone. Point the camera here to open the import there.

Your onX export
Groundwind reads it and shows what's in it before anything is kept.

Pigeon River, Michigan
Every stand you marked, with the evening's wind at head height and the scent from Ridge Stand.

Your other ground
Pins on ground you haven't loaded yet show up here. One tap loads the wind there, free.
Garmin, Gaia GPS, Google Earth and most mapping apps export GPX or KML too, and they come in the same way.
onX leaves photos, colours and icons out of its exports. Bring the same file in twice and nothing doubles up, and Undo takes it all back off.
The file is read on your phone, and your pins, paths and tracks stay there. We don't see where they are unless you ask us to load a spot.
onX gets you to the property line. Groundwind gets you to full draw. Keep onX for land, landowners and the whole map, and bring the stands that matter here for the wind, the thermals and your scent.