Information(about issues)

Announcement

• [2025/03/13] Grand Sumo App [ver 2.0.8]release
• [2025/03/11] Grand Sumo App [ver 2.0.7]release
• [2025/02/19] Grand Sumo App [ver 2.0.5]release
• [2025/02/12] Grand Sumo App [ver 2.0.4]release
• [2025/01/22] Grand Sumo App [ver 2.0.3]release
• [2024/10/01] 10/13～10/14、10/21～10/22 Maintenance of "Information (Help) and Inquiries"

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About this App

System requirements

• System requirements

Main features of the app

• Photo Gallery
• Sumo articles(only available in Japanese)
• Honbasho (Tournament) Information
• Kanto-Seishin Rikishi (Rikishi with the Most Fighting Spirit)
• Gohiiki (Favorites)
• Rikishi Search

See all 8 articles

Tanimachi (Premium Member)

• About Tanimachi (Premium Member)
• How to Register for a Tanimachi (Premium Member) Account
• How to Unregister Your Tanimachi (Premium Member) Account
• Validity/Renewal of Tanimachi (Premium Member) Account

When You Change Your Device

• How to restore Tanimachi membership

Time of Information Announcements

• Time of Information Announcements

Other

• Opt out

Troubleshooting(FAQ)

When you boot the app and use it

• I can't use the app by "error code:3840"
• The app does not start by "error code:0"
• The app suddenly crash while in use/The app is running slow

Tanimachi (Premium Member)

• How to cancel the membership of Tanimachi Free Trial
• I reinstalled the app and now there is something wrong with my "Tanimachi(Premium Member) registration information"
• Will I still be charged even if I uninstall (delete) the app?

Gohiiki (Favorites)

• Gohiiki Rikishi was reseted after reinstall the app

Torikumi Videos / Information

• I don’t want to know the results before watching videos
• I cannot get push notifications

Others

• How to change the display language / アプリ内表示言語の切替方法
• I forgot my Apple ID

Legal Information

Terms of Use

• Terms of Use - Nihon Sumo Kyokai Official App Grand Sumo

Handling of Personal Information

• Basic Privacy Policy

Inquiries

Contact Us

• Inquiries