Everyone is eligible for a 30-day trial before purchasing a subscription is necessary. With that, you will be able to use application’s full functionality and have access to support if any questions or problems arise. When the trial period is over you can either purchase your subscription or leave your account as it is.
The functionality will be of a Standard AP account, which should help you run one or two projects, register all project related personnel and start working right away.
You have to be careful though, after the trial period is over your data will be purged after 30 days.