Editor's Review
Book a Carnival cruise and the HUB app becomes something you check several times a day once aboard. Before sailing it holds the reservation, the check-in process, boarding documents and the countdown. On the ship it turns into the daily programme, showing what is happening where, which restaurants are open and which excursions still have space.
What surprises first-time cruisers is that the app keeps working at sea. It runs over the ship's own network rather than the open internet, so schedules, deck plans and account balances stay reachable without buying a Wi-Fi package. Onboard chat between people in your party is the exception, sold as a paid add-on charged per person for the voyage, which is worth settling before everyone boards.
Outside a booking there is nothing to do here, and that is the honest limit. The 4.56 average across five million installs comes from people using it in the single context it was designed for. Complaints usually concern sign-in before departure and syncing after a reservation has just been changed, both of which tend to settle once you are on the ship.
Features
Booking details, check-in and boarding documents
Daily onboard schedule of activities and dining
Deck plans and venue opening hours
Shore excursion browsing and booking
Paid onboard chat with others in your party
Pros
Works over the ship's network at sea without an internet package
Replaces the printed daily programme with a searchable schedule
Cons
Nothing to use without an active Carnival reservation
Onboard chat carries a separate per-person charge
Sign-in and reservation syncing are the recurring pre-cruise complaints
Questions people ask
Does the app work without buying Wi-Fi?
The schedule, deck plans and account sections run on the ship's own network and stay available at sea. Anything reaching the wider internet still needs a connectivity package.
Is the onboard chat free?
No. Chat is sold as an add-on with a per-person charge for the sailing, separate from any Wi-Fi plan.
Can I use it before I have booked?
There is very little to see. The app is organised around a reservation, so it only becomes useful once a cruise is confirmed.