Judo Shiai is an app that transforms your iPhone or iPad into a complete judo scoreboard. It can also mirror the display to any TV or external screen, allowing everyone on the mat to easily follow the contest. Whether you are competing or practicing, Judo Shiai quickly becomes a valuable tool on the tatami.

The app features a full judo scoreboard that tracks ippon, waza-ari, and shido. It also includes a full match clock and manages golden score timing for you. For added flexibility, there is a separate osaekomi timer where you can set adjustable hold durations. You can work with custom fight durations suitable for anything from a school tournament scoring to an international contest scoreboard. For team events, the app offers a team match mode designed for club and interclub competitions. You can choose from four display themes, including the IJF competition style and a high-contrast dark board.

When using Judo Shiai, you can connect your device to a TV with a cable or use AirPlay integration to show a full-screen scoreboard. The display adapts to the external screen while the controls stay on your device, keeping everything user-friendly. The app also supports dynamic island features, providing live activity tracking that shows the score and clock right on your Lock Screen.

To make managing matches easier, you can use Siri shortcuts. These allow you to start, pause, and stop a match or a randori without hassle. If you are interested in practicing, the app has randori interval countdowns. You can set work and rest times to keep your focus on the judoka during practice match tracking.

Judo Shiai offers a free version that lets you run matches of up to 2 minutes and allows teams of 2 fighters. You can also use the randori feature for up to 3 intervals, though the external scoreboard will only show in demo mode. For those who want fuller access, premium subscription plans are available. This option removes all limits and can be purchased as a monthly or annual subscription, or as a one-time purchase option for lifetime access.

Payment for the premium features is charged to your Apple account upon confirmation of purchase. Keep in mind that subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period. The renewal payment will also be charged within 24 hours before the end of that period. You can manage or cancel your subscription in your Apple account settings.

With Judo Shiai, enjoy the benefits of real-time scoring, judo event management, and customizable display themes. It is designed to be compatible with various devices, making it an essential tool for both competition and practice modes.