Support
Browse the questions below, or email us if you still need a hand.
How do I change the language?
Settings → Display language. The first option is Follow phone. If your system language is not English, Traditional Chinese, or Simplified Chinese, the app uses English.
Does it work offline?
Yes. After the first successful load, content is cached on your device. You can read and practise without a connection; updates need the internet.
Where is my progress stored?
On your device only. Uninstalling the app removes your progress and cache permanently.
How do I reset progress?
Settings → Clear study progress. To remove everything stored locally, use Clear all data.
Will new content appear automatically?
Yes. Content is served by our backend and the app checks for updates in the background — no reinstall needed.
I found a content error.
Email [email protected] with the part name, question ID, and a screenshot. We will fix it as soon as we can.
How do I join TestFlight?
Email [email protected] with your Apple ID email and we will send an invitation.
Privacy questions
See the privacy policy, or email us directly.
Still need help?
Email [email protected]. For content issues, include the part name, question ID, and a screenshot — it helps us fix things faster.
We usually reply within two business days.