First things first: You can use Luana completely free of charge. We will also never sell any data nor display any ads to you.
We offer some premium features that are available on a monthly, annual or lifetime subscription. You can check the current prices within the app.
With your purchase you support the further development of Luana. Thank you for your support! 
Subscriptions will be charged to your Apple ID account at the confirmation of purchase or after the free trial period if offered. Your subscription will automatically renew unless canceled at least 24 hours before the end of the current period. Your account will be charged 24 prior to the end of the current period. After purchase, you can manage your subscriptions in the App Store Account Settings. Any unused portion of a free trial period will be forfeited when you purchase a subscription.
Canceling your subscription is super easy. Tap here to manage your active subscriptions.