Matnet Jiu-Jitsu Database is a free iPhone app developed by Maxwell Timmons. It falls under the lifestyle category with a subcategory of sports. This app is designed to provide a comprehensive understanding of jiujitsu positions and transitions.

With over 50 positions, including original artwork, Matnet visually maps out how to move from one position to another and ultimately to submission. Whether you're a complete beginner or an experienced practitioner, this app can help you gain a better understanding of the big picture and fill any gaps in your game.

One of the standout features of Matnet is the "Match Planner." This feature allows you to plot each individual position across an entire match and save it for later reference. Additionally, the "Big Picture" feature provides a high-level interactive node map of all the positions and their transitions.

Matnet Jiu-Jitsu Database aims to continuously improve and expand its content based on user feedback. The developer encourages users to explore the app and provide suggestions for new positions and artwork.

Overall, Matnet Jiu-Jitsu Database offers a valuable resource for jiujitsu practitioners of all levels, providing a clear visual representation of positions and transitions to enhance their understanding and improve their skills.