Tillt is a free iPhone app developed by Toe The Line LLC. It falls under the Lifestyle category and specifically targets Health & Fitness enthusiasts. With Tillt, users can participate in performance-based competitions against friends and competitors, with the chance to win cash prizes.

The app allows users to set up competition details and find challengers within their skill range. By integrating with Apple HealthKit data and top exercise tracking apps, Tillt tracks and measures users' performance during the competitions.

Tillt offers a unique platform for fitness enthusiasts to challenge themselves and others, providing a motivating and competitive environment. Whether you're looking to improve your personal fitness goals or compete for cash prizes, Tillt offers a fun and engaging experience for users of all fitness levels.