Yes, Cool Wallpaper offers a free version with limited features, as well as a free trial period for premium features, allowing users to explore before committing.

While you can browse and download new wallpapers with an internet connection, you can also use previously downloaded wallpapers offline.

You can contact support or send feedback for Cool Wallpaper through the app's help section, by emailing the support team, or visiting the official website for assistance.

You can manage or cancel your Cool Wallpaper subscription through your device's app store settings or directly within the app's subscription management section.