Yes! Any meetings or minutes completed during your 14 day trial counts toward the remainder of the month.
For example, if you use a total of 600 minutes during the trial period, and sign up for the Pro 1000 plan at the end of your trial you will have 400 minutes remaining to use until the end of your monthly billing cycle.
If you choose to downgrade to the Starter plan at the end of your trial, the number of meetings you’ve captured on Supernormal at that point will apply towards your 10 meeting limit for the rest of that month. For example, if you’ve captured 4 meetings at the end of your trial period, you will have 6 remaining meetings available for capture for the next 14 days.