How does pocket app make money?

Could you elaborate on the financial model and revenue streams of the Pocket app? As a cryptocurrency and finance practitioner, I'm curious to understand how the app generates income. Does it rely primarily on user subscriptions, advertisements, or some other form of revenue? Are there any unique financial mechanisms that Pocket employs to monetize its services? Furthermore, how do these revenue streams align with the app's overall mission and user experience? Understanding the financial sustainability of the app is crucial in assessing its long-term viability and potential for growth.