Yes, Pipe Trades Pro Calculator typically offers a free trial or a limited free version to allow users to explore its features before committing to a subscription.

No, Pipe Trades Pro Calculator can be used offline, allowing users to access its features and perform calculations without needing an internet connection.

Users can contact support or send feedback through the app's support section, which typically includes options for email or a contact form, ensuring direct communication with the development team.

Users can manage or cancel their subscriptions directly through the app or the app store where it was purchased, following the specific instructions provided in the settings menu.