Count Date Calculator is a lifestyle app designed for iPhone users. It offers a simple and beautiful date calculator that helps users answer questions like when is the D-100 day for an event, the 1000th day anniversary of a relationship, or how many days are left until Christmas. The app provides an intuitive interface for easy date calculations.

Users can set a base date using touch and move gestures, tap the 'Count' button, and then use finger movements to calculate dates. The app allows for single, double, and triple finger gestures to adjust days, months, and years. Additionally, users can switch between two modes - calculating a future date based on days or determining the number of days between two dates. Count Date Calculator is optimized for iPhone 5.