Do I really need to sign into Stud.io? I recently installed Stud.io 2.0 on my MacBook. Is it absolutely necessary to sign in, or is that just so that you can save to the cloud and build with friends?
The sign-in is to enable cloud saves, build with friends, wanted list export, upload to the Studio Gallery, shopping integration features like price lookup, and probably some other features I haven't thought of or have not been mentioned in the comments yet. If you don't plan on using any of those features then it isn't required to sign-in.