No registration
You do not need to register. We do not collect your name, phone number or email address.
Your data stays on your device
Your progress and settings are stored only on your device.
No analytics or advertising
The app has no ads and does not send usage statistics or crash reports to us or to third parties. All study materials work offline; purchases need an internet connection.
Purchases
Purchases and subscriptions are processed by Google Play. We never see your card details. You can cancel a subscription at any time in Google Play. Google's privacy policy: https://policies.google.com/privacy
Error reports
If you tap "Report an error", your email app opens with a prepared message. We receive only what you choose to send, including your email address, and use it only to reply and to fix the content.
AI-generated explanations
Explanations are generated with the help of AI. If you find a mistake, please tell us with the "Report an error" button.
Independence
This app is made by an independent developer and is not affiliated with the Chinese International Education Foundation or CTI.
Children
The app is not directed at children under 13.
Contact
Contact: alvin00886@outlook.com
Developer: Cgood Apps