I just found http://www.vyu360.com/ . It is essentially 2 lenses that you attach to your phone, which allows it to create spherical photos in 1 action.
The con is, that only a limited number of newer phones are supported. One technical requirement is, that the phone must be able to shoot with both the front and back camera at the same time, but the lenses are made for each specific model of phone, so the support is limited.