• Monthly Billing Plans: renew every month and they can be cancelled anytime (for example they can be used for 1 month only) After cancelling the renewal you won't be charged again and you'll also keep the requests you still have until the end of your billing period.
• Yearly Billing Plans:  have a 12-month commitment and a unique billing at the beginning of the plan and come with a 30% discount applied (this is why their price is different from the monthly plans).