Subscriptions with Avanlee are easy, and only one person in your family needs to have one for everyone to use the app.
All of Avanlee's features are free to use without a subscription. If you want to add additional family members to the app, it's $9.99 per month.
You can manage your subscription by clicking on the Main Menu icon 
in the upper left-hand corner and clicking Account. Scroll to the Subscription section of the page, and follow the steps there. That's it!
As a note, you can send support team emails without a subscription.