If you’d like to upgrade to an annual subscription, follow these steps:

Be sure you're logged into the Chatbooks account with the subscription.

Click on the subscription you want to upgrade to the annual option.

On this page, click the Settings Wheel in the upper right-hand corner.

Then, click "Manage Subscription."

Under "Billing Cadence", click "Billing frequency."

Then click "Pay annually":

Once selected, click "Save" at the bottom of the page.

You have now upgraded to the annual option—your next billing at the annual price will be processed on the last day of the month in which you made this change.

To learn how to upgrade your subscription through the Chatbooks app, see here.