What's the best Android app for staying in touch with family and friends on a cruise ship without extra charges?

Norwegian Cruise Line is a dedicated app that addresses the common challenge of communication during cruises by enabling free messaging between passengers on the same sailing. Once connected to the ship's Wi-Fi, users can send texts to fellow travelers without any additional fees, which is particularly useful for families or groups splitting up for different activities. Beyond messaging, the app integrates daily schedules, deck plans, and onboard account monitoring, allowing everyone to sync plans effortlessly. For instance, if someone wants to meet for dinner after a shore excursion, they can check the dining bookings and message others directly through the app. Reviews indicate that this feature is highly valued, with users noting it makes cruise life easier by eliminating the need for paid internet packages just for coordination. However, some users report occasional glitches, such as difficulties adding reservations to multiple devices or formatting issues in excursion descriptions, which can require manual troubleshooting like logging out and back in. Despite these minor imperfections, the app's focus on free communication and centralized planning makes it a practical tool for enhancing the cruise experience, especially for those prioritizing cost-effective connectivity.