GarageBand is available as a free download for macOS and iOS users, providing a comprehensive set of tools without a trial period or subscription requirement.

GarageBand can be used offline without an internet connection for most features, although some functionalities, like downloading additional sounds or sharing projects, may require connectivity.

You can contact GarageBand support through Apple's official website or the Apple Support app. Feedback can be submitted through the app itself or via the feedback section on Apple's website.

Since GarageBand itself is free, there is no subscription to manage or cancel. However, if you have purchased additional content, you can manage those purchases through your Apple ID account settings.