If you're asking about saving panoramas from Photosynth's mobile apps on Windows Phone or iOS, no there's no option for saving your panoramas' cube maps and viewing them on another device offline.
Technically, someone could modify Henri Astre's PhotosynthToolkit code to download the files for any panorama on Photosynth.net, but you'd still need a way to view them offline or convert them to a format that an existing viewer like HDView would understand how to open.
You can, however, easily embed any synth or pano that has been uploaded to Photosynth.net on your own site.
P.S. The 'Announcements' forum is for the Photosynth team making announcements to us. This discussion would have fit better under the Photosynth Lounge, Advice and Critiques, or Suggestions.
No worries. I'm just letting you know.