Makai is a free iPhone application developed by Chris Perkins, falling under the Utilities & Tools category. It serves as a convenient tool for flight planning, allowing users to input their waypoint enroute times before takeoff. This app enables users to compare the running total time against their planned enroute time to ensure accuracy.

Once in the air, users can enter their actual time off the ground, and Makai will calculate and display waypoint estimates for easy flight plan log entry. Additionally, users can adjust their waypoint estimated times of arrival (ETAs) while in-flight with the help of convenient increment and decrement buttons in the flight time log. Makai also offers the functionality to set alarms for approaching waypoint ETAs, at a waypoint ETA, and 10 minutes past a waypoint ETA to prompt users for necessary actions.