Bracket Builder is a free iPhone application developed by John Perret. It falls under the lifestyle category with a focus on sports. This app allows users to easily track and share tournament status, making it a useful tool for organizing and monitoring various types of tournaments.

The app offers several features that are free to use. Users can create both single and double-elimination brackets with ease. The brackets can accommodate a range of team sizes, from as few as 2 teams for double elimination to up to 64 teams for single elimination. The teams are automatically ordered based on seed, and the app also supports the automatic insertion of "BYE" matches.

Additionally, users have the option to randomize team seeds if desired. The app keeps track of winners and losers, making it easy to monitor tournament progress. Users can easily remove winners as needed. The app also offers light and dark mode support for personalized aesthetics.

One of the standout features of Bracket Builder is the ability to share brackets as an image with participants or friends. This makes it convenient to distribute and communicate tournament updates. Whether organizing a pool, tennis, baseball, basketball, pong, or any other type of tournament, Bracket Builder provides a user-friendly interface and essential features to streamline the process.