Judo Shiai Scoreboard
Scoreboard, Timer & Randori
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Everything you need to referee a judo match on your device, with a full-featured scoreboard displayed to any TV.
Try it for free, go Premium to unlock all limitations!
Judo Shiai turns your iPhone or iPad into a full judo scoreboard, and mirrors it to any TV or external screen so the whole mat can follow the contest.
Whether in competition or in practice, Judo Shiai will quickly become your best companion on tatami.
SCOREBOARD
• Full judo scoreboard: ippon, waza-ari and shido, with the match clock and golden score handled for you.
• A separate osaekomi timer, with hold durations you can adjust.
• 2025, 2018, 2017, 2013 and 2010 rules, so you score the way you want.
• Custom fight durations, from a school tournament to an international contest.
• Team match mode for club and interclub competitions.
• Four display themes, from IJF competition style to a high-contrast dark board.
EXTERNAL SCREEN
• Connect your device to a TV with a cable, or use AirPlay, for a full-screen scoreboard.
• The board adapts to the screen it lands on, while the controls stay on your device.
SYSTEM INTEGRATION
• A Live Activity keeps the score and the clock on your Lock Screen and in the Dynamic Island.
• Siri and Shortcuts start, pause and stop a match or a randori for you.
RANDORI
• Interval countdowns for practice: set the work and rest times once, then keep your eyes on the judoka.
PREMIUM SUBSCRIPTION AND TERMS
• The free version runs matches of up to 2 minutes, teams of 2 fighters and randori of up to 3 intervals, and shows the external scoreboard in demo mode.
• Premium removes every limit, as a monthly or annual subscription, or as a one-time purchase for lifetime access.
• Payment is charged to your Apple Account at confirmation of purchase. A subscription renews automatically unless it is cancelled at least 24 hours before the end of the current period, and the renewal is charged within the 24 hours before that. Manage or cancel it in your Apple Account settings.
• Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
more Judo Shiai now supports iPhone Duo.
We would love to hear your feedback! If you have questions, ideas or issues, feel free to reach out to us. You can contact us using the Contact button in the app or via the website https://judoshiai.app.
If you like the app, please give us a quick rating on the App Store! Thank you for using Judo Shiai! :-)
2026.290 Oct 19
Judo Shiai migrates to a freemium model:
– The free version covers matches of up to 2 minutes, teams of 2 fighters, randori of up to 3 intervals, and the external scoreboard in demo mode.
– Go Premium to remove every limitation, with a monthly or annual subscription or a one-time lifetime purchase.
– Already bought the app? Nothing changes for you: you keep lifetime access to every feature, at no extra cost.
The external scoreboard now supports the changes made to iOS 27.
We would love to hear your feedback! If you have questions, ideas or issues, feel free to reach out to us. You can contact us using the Contact button in the app or via the website https://judoshiai.app.
If you like the app, please give us a quick rating on the App Store! Thank you for using Judo Shiai! :-)
2026.263 Sep 22
This update includes the following changes:
– A Live Activity to follow the score from the Lock Screen and the Dynamic Island
– Siri and Shortcuts support for the main features
– An improved scoreboard design that better accommodates different external screen sizes.
– Various minor bug fixes.
We would love to hear your feedback! If you have questions, ideas or issues, feel free to reach out to us. You can contact us using the Contact button in the app or via the website https://judoshiai.app.
If you like the app, please give us a quick rating on the App Store! Thank you for using Judo Shiai! :-)
2026.246 Sep 14
This new version includes display improvements on the external screen.
We would love to hear your feedback! If you have questions, ideas or issues, feel free to reach out to us. You can contact us using the Contact button in the app or via the website https://judoshiai.app.
If you like the app, please give us a quick rating on the App Store! Thank you for using Judo Shiai! :-)
2026.215 Aug 3
This new version fully supports iOS 26 and adopts the new Liquid Glass design.
We would love to hear your feedback! If you have questions, ideas or issues, feel free to reach out to us. You can contact us using the Contact button in the app or via the website https://judoshiai.app.
If you like the app, please give us a quick rating on the App Store! Thank you for using Judo Shiai! :-)
2025.298 10/27/2025
This new version supports the new Judo rules 2025, which can be selected in the scoreboard settings.
A new option has also been added for displaying score names in individual fights.
We would love to hear your feedback! If you have questions, ideas or issues, feel free to reach out to us. You can contact us using the Contact button in the app or via the website https://judoshiai.app.
If you like the app, please give us a quick rating on the App Store! Thank you for using Judo Shiai! :-)
2025.32 02/03/2025
This new version supports the new Judo rules 2025, which can be selected in the scoreboard settings.
We would love to hear your feedback! If you have questions, ideas or issues, feel free to reach out to us. You can contact us using the Contact button in the app or via the website https://judoshiai.app.
If you like the app, please give us a quick rating on the App Store! Thank you for using Judo Shiai! :-)
2024.359 01/12/2025
This new version brings a better compatibility with iOS 18 and supports dark and tinted variants of the icon.
We would love to hear your feedback! If you have questions, ideas or issues, feel free to reach out to us. You can contact us using the Contact button in the app or via the website https://judoshiai.app.
If you like the app, please give us a quick rating on the App Store! Thank you for using Judo Shiai! :-)
2024.270 09/30/2024
This new version makes it easier to change a fighter's color and improves access to scoreboard and randori settings.
We would love to hear your feedback! If you have questions, ideas or issues, feel free to reach out to us. You can contact us using the Contact button in the app or via the website https://judoshiai.app.
If you like the app, please give us a quick rating on the App Store! Thank you for using Judo Shiai! :-)
2024.47 02/17/2024
This new version brings a better compatibility with iOS 17. Please note that the app requires now iOS 12 or later.
We would love to hear your feedback! If you have questions, ideas or issues, feel free to reach out to us. You can contact us using the Contact button in the app or via the website https://judoshiai.app.
If you like the app, please give us a quick rating on the App Store! Thank you for using Judo Shiai! :-)
2023.310 11/08/2023
Judo Shiai 2021.1 is a maintenance update that brings a better compatibility with iOS 15. Please note that the app requires now iOS 12 or later.
We would love to hear your feedback! If you have questions, ideas or issues, feel free to reach out to us. You can contact us using the Contact button in the app or via the website https://judoshiai.app.
If you like the app, please give us a quick rating on the App Store! Thank you for using Judo Shiai! :-)
2021.1 12/20/2021
Judo Shiai 2020.2 is a maintenance update that brings compatibility with iOS 14.
We would love to hear your feedback! If you have questions, ideas or issues, feel free to reach out to us. You can contact us using the Contact button in the app or via the website https://judoshiai.app.
If you like the app, please give us a quick rating on the App Store! Thank you for using Judo Shiai! :-)
2020.2 09/30/2020
Judo Shiai 2020.1 is a maintenance update that brings compatibility with the latest system version.
We would love to hear your feedback! If you have questions, ideas or issues, feel free to reach out to us. You can contact us using the Contact button in the app or via the website https://judoshiai.app.
If you like the app, please give us a quick rating on the App Store! Thank you for using Judo Shiai! :-)
2020.1 04/03/2020
Judo Shiai 2019.3 brings some minor fixes for dark mode on iOS 13.
We would love to hear your feedback! If you have questions, ideas or issues, feel free to reach out to us. You can contact us using the Contact button in the app or via the website https://judoshiai.app.
If you like the app, please give us a quick rating on the App Store! Thank you for using Judo Shiai! :-)
2019.3 10/14/2019
Judo Shiai 2019.2 brings full support for iOS 13 and for the latest iOS devices, as well as some minor changes.
## In Details
• Dark Mode support to go along with iOS 13.
• Support for iOS dynamic text sizes.
• Fix an issue with external screen that was not updated after changing the display theme.
• Starting from this version, version numbers are based on the year, i.e. 2019.2 represents the 2nd revision made available in 2019.
We would love to hear your feedback! If you have questions, ideas or issues, feel free to reach out to us. You can contact us using the Contact button in the app or via the website https://judoshiai.app.
If you like the app, please give us a quick rating on the App Store! Thank you for using Judo Shiai! :-)
2019.2 09/30/2019
Judo Shiai 6.0 brings full support for iOS 12.2 and for the latest iOS devices, as well as some minor optimizations.
We would love to hear your feedback! If you have questions, ideas or issues, feel free to reach out to us. You can contact us using the Contact button in the app or via the website https://judoshiai.app.
If you like the app, please give us a quick rating on the App Store! Thank you for using Judo Shiai! :-)
6.0 04/02/2019
Judo Shiai 5.0 brings full support for iOS 12, as well as some optimizations for the latest iOS devices.
We would love to hear your feedback! If you have questions, ideas or issues, feel free to reach out to us. You can contact us using the Contact button in the app or via the website https://judoshiai.app.
If you like the app, please give us a quick rating on the App Store! Thank you for using Judo Shiai! :-)
5.0 10/08/2018
Judo Shiai 4.0 makes the app "feel" better by providing a tactile response to most important actions and events thanks to haptic feedback.
## In Details
• Add haptic feedback on user-initiated actions like Hajime, Mate or Osaekomi.
• Add slight vibrations at the end of the regular time of a fight and at the end of a Randori phase.
We would love to hear your feedback! If you have questions, ideas or issues, feel free to reach out to us. You can contact us using the Contact button in the app or via the website https://judoshiai.app.
If you like the app, please give us a quick rating on the App Store! Thank you for using Judo Shiai! :-)
4.0 06/18/2018
Judo Shiai 3.2 fixes a sound issue at the end of a fight or Osaekomi. As a reminder, version 3.0 allows you to use the new IJF Judo Refereeing Rules effective from January 2018. Various display improvements have also been made on the external display for the team competition mode.
## In Details
• Add new 2018 IJF rules (version 26, see https://www.ijf.org/news/show/detailed-explanation-of-the-ijf-judo-refereeing-rules).
• Allow to change the remaining time of an ongoing fight by long-pressing on the countdown.
• Improve readability of the fighter and team names on the external screen.
• Improve readability of team scores on the external screen.
• Minor corrections.
We would love to hear your feedback! If you have questions, ideas or issues, feel free to reach out to us. You can contact us using the Contact button in the app or via the website https://judoshiaiapp.com.
If you like the app, please give us a quick rating on the App Store! Thank you for using Judo Shiai! :-)
3.2 03/17/2018
Judo Shiai 3.1 fixes a layout issue on device rotation. As a reminder, version 3.0 allows you to use the new IJF Judo Refereeing Rules effective from January 2018. Various display improvements have also been made on the external display for the team competition mode.
## IN DETAILS
- Add new 2018 IJF rules (version 26, see https://www.ijf.org/news/show/detailed-explanation-of-the-ijf-judo-refereeing-rules).
- Allow to change the remaining time of an ongoing fight by long-pressing on the countdown.
- Improve readability of the fighter and team names on the external screen.
- Improve readability of team scores on the external screen.
- Minor corrections.
We would love to hear your feedback! If you have questions, ideas or issues, feel free to reach out to us. You can contact us using the Contact button in the app or via the website https://judoshiaiapp.com.
If you like the app, please give us a quick rating on the App Store! Thank you for using Judo Shiai! :-)
3.1 01/22/2018
Judo Shiai 3.0 allows you to use the new IJF Judo Refereeing Rules effective from January 2018. Previous rules are still available as options. You can now change the remaining time of an ongoing fight if needed. Various display improvements have also been made on the external display for the team competition mode.
## IN DETAILS
- Add new 2018 IJF rules (version 26, see https://www.ijf.org/news/show/detailed-explanation-of-the-ijf-judo-refereeing-rules).
- Allow to change the remaining time of an ongoing fight by long-pressing on the countdown.
- Improve readability of the fighter and team names on the external screen.
- Improve readability of team scores on the external screen.
- Minor corrections.
We would love to hear your feedback! If you have questions, ideas or issues, feel free to reach out to us. You can contact us using the Contact button in the app or via the website https://judoshiaiapp.com.
If you like the app, please give us a quick rating on the App Store! Thank you for using Judo Shiai! :-)
3.0 01/08/2018
Version 2.1.4 fixes a display issue while connecting an external scoreboard screen.
Judo Shiai 2.1 allows you to change the sound effects and export the results at the end of a team match. The app is also fully compatible with iOS 11 and the iPhone X.
## IN DETAILS
- iOS 11 and iPhone X compatibility
- Allows to set the sound effects from a list of sounds
- Allows to export or print the results of a team match
- Improves edition in the team match screen
- Fixes German translations in the settings
- Visual changes to the settings screen
We would love to hear your feedback! If you have questions, ideas or issues, feel free to reach out to us. You can contact us using the Contact button in the app or via the website https://judoshiaiapp.com.
If you like the app, please give us a quick rating on the App Store! Thank you for using Judo Shiai! :-)
2.1.4 11/28/2017
Version 2.1.3 fixes a sound issue at the end of regulation time and a wrongly updated fight duration on team matches.
Judo Shiai 2.1 allows you to change the sound effects and export the results at the end of a team match. The app is also fully compatible with iOS 11 and the iPhone X.
## IN DETAILS
- iOS 11 and iPhone X compatibility
- Allows to set the sound effects from a list of sounds
- Allows to export or print the results of a team match
- Improves edition in the team match screen
- Fixes German translations in the settings
- Visual changes to the settings screen
We would love to hear your feedback! If you have questions, ideas or issues, feel free to reach out to us. You can contact us using the Contact button in the app or via the website https://judoshiaiapp.com.
If you like the app, please give us a quick rating on the App Store! Thank you for using Judo Shiai! :-)
2.1.3 11/13/2017
Version 2.1.2 fixes a display issue on an external scoreboard screen.
Judo Shiai 2.1 allows you to change the sound effects and export the results at the end of a team match. The app is also fully compatible with iOS 11 and the iPhone X.
## IN DETAILS
- iOS 11 and iPhone X compatibility
- Allows to set the sound effects from a list of sounds
- Allows to export or print the results of a team match
- Improves edition in the team match screen
- Fixes German translations in the settings
- Visual changes to the settings screen
We would love to hear your feedback! If you have questions, ideas or issues, feel free to reach out to us. You can contact us using the Contact button in the app or via the website https://judoshiaiapp.com.
If you like the app, please give us a quick rating on the App Store! Thank you for using Judo Shiai! :-)
2.1.2 11/09/2017
Version 2.1.1 fixes a sound issue on the scoreboard.
Judo Shiai 2.1 allows you to change the sound effects and export the results at the end of a team match. The app is also fully compatible with iOS 11 and the iPhone X.
## IN DETAILS
- iOS 11 and iPhone X compatibility
- Allows to set the sound effects from a list of sounds
- Allows to export or print the results of a team match
- Improves edition in the team match screen
- Fixes German translations in the settings
- Visual changes to the settings screen
We would love to hear your feedback! If you have questions, ideas or issues, feel free to reach out to us. You can contact us using the Contact button in the app or via the website https://judoshiaiapp.com.
If you like the app, please give us a quick rating on the App Store! Thank you for using Judo Shiai! :-)
2.1.1 11/06/2017
Judo Shiai now supports iPhone Duo.
We would love to hear your feedback! If you have questions, ideas or issues, feel free to reach out to us. You can contact us using the Contact button in the app or via the website https://judoshiai.app.
If you like the app, please give us a quick rating on the App Store! Thank you for using Judo Shiai! :-)
more Version 2026.290 Oct 19
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