You can post your shot to Twitter or Facebook, or send it via iMessage/SMS. The message or post contains a sharing link to a public web-site where users can view your shot plan. They don’t need to be running the app to view this.
In addition, you can email your shot or project (a shot list) to friends and colleagues. The email includes full shot information, links to the sharing web site, links to open the shot back in Photo Transit or TPE (The Photographer's Ephemeris), plus a KML export that can be opened in Google Earth™ or your favorite GPS app.