BT747 "Desktop" can geotag your JPG pictures and show your track on a map without needing to open another application.
To GeoTag: drag and drop your files to BT747. Then on the 'Files to Tag' tab, do 'Tag from File' and to write back the information to JPG files, do 'Save Tagged Files'. You can adjust the time offset vs. UTC using the 'Time Zone' setting on the same tab.
The interface for this will be improved over time. The tagging works for me and it is what I use.
You can also drag and drop already tagged pictures and see their positions on the map.