Duel: Yu-Gi-Oh Life Point Tracker is a free, all-in-one tracker for Yu-Gi-Oh! Trading Card Game duels. The app is specifically designed to help both players track their life points on the same device, making it easier to keep track of the game's progress. The app offers a simple yet powerful design that is easy to understand. It also comes with a variety of features, including Speed Duel support, 15+ themes, custom background support, two-player interface, quick access to addition, subtraction, and halving operations, fully randomised and animated die roll and coin flip, field center frame option, screen auto-lock toggle, match progress tracking, and history recording.

The app is an unofficially developed application and is not endorsed by or affiliated with KONAMI Corporation. However, it is a convenient companion for Yu-Gi-Oh! Trading Card Game players who want to keep track of their life points easily and efficiently. The app is available for Android devices and can be downloaded for free from the Google Play Store.