Hiitly is a free iPhone app developed by Derek Holevinsky that is designed to be an easy-to-use and visually appealing Tabata interval training timer. Whether you're into spinning, running, boxing, or cross fit, this app is perfect for creating custom workouts and measuring your progress.

One of the standout features of Hiitly is its simplicity. Unlike other workout apps that require you to set up numerous workout settings, Hiitly streamlines the process by allowing you to configure just a few things before starting your workout. This makes it incredibly convenient for those who want to get straight into their training without wasting time on unnecessary settings.

In addition to its ease of use, Hiitly is also accessible for blind and deaf users, making it an inclusive app for everyone. This is a commendable feature that sets Hiitly apart from other interval training timers on the market.

Overall, Hiitly is a great tool for individuals and groups looking to incorporate Tabata interval training into their workouts. Its simplicity, accessibility, and customizable features make it a valuable addition to any fitness routine.