You can change plans from monthly to yearly at any time within your account profile!
Access your account profile by clicking the person icon in the upper right corner of the app when logged in.
Then click "Change to Yearly Plan" at the top.
If you have a coupon code, enter that in the coupon box and hit the 'apply' button.
Click the 'Change My Subscription to Yearly' button. Now you're all set!
If you need any additional assistance, feel free to reach out to us at hello@slptoolkit.com.