No registration
Your email address will be used to send you the login information for the viewer account. No account is created with your own email at this stage.
Viewer account
You will receive viewer access to an operational account with a number of pre-configured example cases. This account type allows to explore all features included in the full subscription but user calculations are disabled.
Unlimited time
Access to the account is granted instantaneously. There is no time limit, nor a limit on number of logins.