Yes, the app may collect personal data such as your device information and gameplay statistics for analytics and service improvement purposes.

Castle Clash: World Ruler requires an internet connection to play, as it includes multiplayer features and regular updates.

You can cancel your subscription through your device's app store settings, typically found under the 'Subscriptions' section.

The subscription cost for Castle Clash: World Ruler varies, so it's best to check the app for the latest pricing and available subscription options.