Not anymore! The Arc beta ended on August 3rd, 2016. You can still use Arc for free, but you can only create one report. The Paid Plan lets you have more reports and you can access new features as soon as they're released.
If you were one of our early users, you probably won't notice much of a difference right away. That's because we've grandfathered in all of our beta users! You can upgrade to a new plan whenever you want. If you never feel like upgrading, your access to Arc will stay the same. It's just our way of saying thank you to everyone who has been with us from the start and given us such great feedback!