You can begin an analysis without logging in, but saving an opportunity requires an account.
Free account limit
A free account can hold one opportunity. To add another opportunity on the free plan, remove the existing one or upgrade if paid plans are available.
Why login is requested at save
The public home flow lets you test the workflow quickly. Once you choose to save the opportunity, Koreograph needs an account so the model can be stored, synced and reopened later.
Listing starts and anonymous lookup
Some listing and price-paid lookups can run before login so that the wizard feels useful immediately. Saving, syncing and longer-term organisation still require authentication.