Cruise Picker: CountdownDeals is a free iPhone app developed by CRUISE PICKER LLC that allows users to search thousands of cruises by destination, departure port, or cruise line, and their desired travel dates. The app provides an easy-to-use interface without annoying pop-ups or asking for emails. It offers a variety of features that enable users to sort and filter results by lowest price, favorite cruise line, port, type of cabin, or duration of the cruise.

One of the most useful features of the app is the price alert system, which sends daily push notifications to users with any price changes. Users can set as many alerts as they want, and it's completely free. The app also offers last-minute deals and balcony deals for Alaska, which users can subscribe to in the deals section. In addition, the app provides detailed information about each ship, including restaurants, bars, entertainment venues, onboard activities, and each type of cabin.