Should I put my tour in an iframe or host the ZIP myself?

Embed the tour, unless the files must sit on your own web server. Copy the Web Embed Code from the Publish tab into your page: Panoramr serves the tour, every plan can do it, and it needs the tour to be published. Until the tour is hosted in a Vault or in your plan, the embed carries Panoramr's branding. It shows the stored copy of the tour, which can be up to 30 days old after some edits (my changes do not show).

Use the ZIP when your own server must hold the tour. It is a snapshot: after a change you download it again, or use Download only what changed. The free download is the Standard design, with Panoramr's branding on a Free plan; your own design needs Pro, Agency or Enterprise. A map window and YouTube or Vimeo videos still need the internet, and Panoramr does not count views of a downloaded tour.

How do I embed a tour on my website? and Can I download a tour? have the steps.