I have recently started using Pixeet, which requires a fisheye lens that will attach to an Iphone. Problem is, I only have an Ipad with a low resolution camera. I have been substituting the Ipad and an HTC Incredible in its place, but it doesn't work quite right.

I really want to be able to do spherical 360 degree panoramas and this is the only thing I have found that makes it really easy.

It is rough and low resolution, but here is one I just did:
http://www.pixeet.com/iframe/mwew2bvo

Any suggestions on comparable software?

I have used Panorama by Thinking Drone. Of my choices in the Apps Store, I like this one best (and it is free.)