Terms of use

Kudoku for HarmonyOS is provided by Lu Liang (Gentleflow) for personal, non-commercial entertainment. App artwork, code and puzzle content remain subject to their respective rights. Do not copy, sell or redistribute them except as permitted by law or authorization. Progress is stored locally without a developer game account or progress cloud recovery. Clearing app data or uninstalling can remove it. Restoring Premium does not restore deleted game progress.

Premium and billing

Optional Premium is offered as monthly or yearly auto-renewing subscriptions or a one-time lifetime purchase. Features include all levels, unlimited hints and mistake tolerance in level mode, automatic candidates, note highlighting, last-cell hints and full history, as described in the app. Lifetime does not renew. Prices, currencies, periods and offers are shown before purchase in the app and Huawei payment flow. Huawei IAP handles transactions. iOS App Store purchases do not automatically transfer to this HarmonyOS version.

Trials and renewal

Eligible new users can receive a 3-day monthly-plan trial or a 7-day yearly-plan trial. Huawei determines eligibility; an introductory offer can be used only once within the subscription group, so trials cannot be combined. Ineligible accounts pay the normal price shown. After the trial, the selected plan automatically renews at the displayed monthly or yearly price until cancelled. Renewal may be charged within 24 hours before the current period ends; cancel ahead of expiry if you do not wish to renew, and check the time and status shown by Huawei. The app presents plan confirmation and auto-renewal terms before proceeding to Huawei's final payment confirmation.

Cancellation, restoration and refunds

Open Settings → About → Manage auto-renewal in the app, or use subscription management in your HUAWEI ID settings, to cancel. Cancellation normally stops the next renewal; entitlement status follows Huawei's order result. Uninstalling or erasing app data does not cancel a subscription. To restore eligible purchases, sign in to the original HUAWEI ID and select Restore purchases on the Premium page while connected to the internet. Request refunds through Huawei's order or support channels, subject to platform rules and applicable law. We do not request payment passwords by email.

Use and your rights

Use the app lawfully and respect others' rights. The game does not promise medical or cognitive health benefits. Updates may change features or fix issues, and functionality may depend on your device, operating system or available storage. These terms do not exclude rights or liabilities that applicable law does not permit to be excluded.

Contact: gentleflowoverseas@gmail.com