Can I try Panoramr without signing up?

Yes. On Create Tour you can build a tour from your own 360 photos without an account: up to 20 panoramas, each a 2:1 JPEG or TIFF, best at 250 MB or less. You tick the box that says you are 18 or over and agree to the terms, and choose your photos; each one goes into a guest tour as soon as it is ready, and you open the tour to add hotspots and choose a design. A guest tour cannot be published, but it can be downloaded from its Publish tab while Panoramr has downloads switched on for the trial. It is kept as a guest tour for 2 days, and creating an account keeps it for good. Try Panoramr without an account has the steps.