This is the support page for every app published by TRAN NGUYEN KHOA.
If you have questions about features, subscriptions, or settings, email us. Please include the app's name and your device model so we can help faster.
We usually respond within 24–48 hours.
To cancel a subscription or request a refund, go to Settings > [your name] > Subscriptions on your iPhone. Refunds are handled by Apple.
Thank you for using our apps.