App Support

Need help with one of our exam-prep apps? Questions, bug reports, subscription or restore-purchase issues — we're happy to help.

Email support

For questions, bug reports, subscription help, or restoring a purchase, email us and include your device model and the app name.

お問い合わせ

Hours: weekdays 10:00 - 18:00 (JST)

We usually reply within two business days.

Premium unlocks all practice questions, the mock exam mode, and category-level analytics.
If a purchase didn't unlock, open the paywall and tap Restore purchase.
Subscriptions renew automatically. You can cancel anytime in iOS Settings → Subscriptions.
Refund requests are handled by Apple at reportaproblem.apple.com.

RUOK LLC

Legal name

RUOK LLC (合同会社ルオック)

Website

お問い合わせ

Business

Organizational change consulting & AI app development