Hawaiian Airlines does not offer a free trial or free version, as the app is free to download and use, but it primarily serves as a tool for managing flight bookings and travel information.

Yes, an internet connection is required to access most features of the Hawaiian Airlines app, such as booking flights and checking flight status.

You can contact Hawaiian Airlines support through their website, where you can find customer service options, or by using the "Contact Us" feature in the app to send feedback or inquiries.

Since Hawaiian Airlines does not have a subscription service, you can manage or cancel your flight reservations directly through the app or website by accessing your bookings.