Buddhify Membership is available as an annual fee as an in-app purchase. It costs US $30 / CAN $30 / £24 / €24 / AUS $40 for a year.
Membership is entirely optional. If you choose to become a member you will be able to access additional content and features that support deepening your practice and trying out different types ways of meditating. If you choose to not become a member, you will still have your usual access to the app with its 200+ guided meditations.