When you sign up for the NearbySchools API under any plan, a 14-day free trial is included for you to try out the API. You will receive a reminder email 7 days before the trial ends, and once the trial is completed your first monthly billing cycle begins (an invoice will be created and you will be charged). During the free trial period, you are limited to the number of API calls included with your plan. Once the billing cycle begins, your API call count will be reset, i.e. any API calls made during the trial will not be counted towards your monthly quota.