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Purchases, Restore & Refunds

Effective date: 2026-10-12 (UTC+09:00)

1. Restore Purchase

Purchase and restore in the app installed from the App Store or Google Play.

2. Free and Paid Scope

U01 (Basic Vowels) and U02 (ㄱ·ㄲ·ㅋ) are free. U03 through graduation are available through a one-time, non-consumable in-app purchase. This is not a subscription and has no recurring or auto-renewing charge. Check the price and currency on the store payment screen before purchasing.

3. Restoring a Purchase

Sign in with the same store account used for the purchase and choose Restore Purchase in the app. This restores access to the paid course in that store; it does not restore learning progress, completion status or study time, or purchases from another store. App Store purchases cannot be restored in Google Play, or vice versa.

4. Requesting a Refund

Refund eligibility depends on the purchase details, region, store policy, and applicable law. We do not guarantee automatic approval.

5. Things to Keep in Mind

Deleting the app is not a refund request. Check your purchase history before trying to pay again. Restoring purchase access and restoring your on-device study records are separate things. Never send your payment password or card number in an inquiry.

If paid content does not unlock, check your store purchase history and try restoring before paying again. Contact hanguldot@gmail.com with the app version, device, store and issue. We may ask for the relevant order number only when needed. Uninstalling is not a refund request; restoring purchases is not personal-data deletion. Applicable withdrawal, refund and consumer rights are not restricted.

Operator Information

The operator, WHITE, represented by Sejin Kim, answers support and privacy inquiries directly at hanguldot@gmail.com.

Operator Information