Yu-Gi-Oh! Calculator

Screenshots of life points being calculated in a game of Yu-Gi-Oh! and other features like a duel timer and virtual dice and coins

Behold: https://www.yugiohcalculator.com/

The ultimate life points tracker for a game of Yu-Gi-Oh! This calculator gets out of your way, so you can focus on dueling.

This calculator works everywhere: iOS, Android, tablets, even PC & Mac. And there’s no app to download. Just type “yugiohcalculator.com” into a web browser, and get back to gaming. Don’t worry; it remembers your life points, even if you leave the page! Save to your homescreen and use even without a connection.

Enter common values more quickly; values are initially assumed to be multiples of 100. You can reset the points in one click. You can undo if you mess up. You can view a history of all calculations you’ve made. You can roll dice and flip coins. You can even manage a 45-minute timer, great for competitive play!

The app is open-source, too: https://github.com/jacksonrayhamilton/yugioh-calculator-2016