The game contains an optional subscription feature. It is not required to play and enjoy the game. If you choose to purchase the subscription, payment will be charged to your iTunes account, and your account will be charged for renewal within 24 hours. Subscription starts at $8.99/month. Prices are in US dollars and may vary in other countries. Auto-renewal can be turned off at any time by going to your settings in the iTunes store after purchase. The subscription can be cancelled at anytime. If you don't choose to purchase the subscription, the game can still be fully played without it. Terms & conditions can be found here https://moonbear.com/terms-and-conditions