Hi @evgeny.kurbatov ,
Sorry I think you are miss understanding the original question here.
If you are working collaboratively in BIM 360 or Autodesk Construction Cloud you need a BIM Collaborate Pro license but if you just save a standalone Revit model (single user at anyone time). Then you don't need a BIM Collaborate Pro license. It is not possible to copy a file from the either BIM 360 or Autodesk Construction Cloud to the free Autodesk Viewer, which is what the question @rhettinger asked I believe.
For your information the Autodesk Construction Cloud is the unified platform which included Autodesk Docs, Autodesk Build (including Cost), BIM Collaborate/BIM Collaborate Pro and Takeoff. Which allows users to use their license(s) to access existing BIM 360 projects and solutions. You can no longer purchase of such products as BIM 360 Docs, BIM 360 Design, etc.
I hope this means sense
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Gareth Spencer
BIM Technical Consultant | Man and Machine (UK)