Support

Octo Chinese teaches Mandarin vocabulary as a road of lessons, with the deck inside the app. Questions, problems, data requests: write to peterschaefer444@gmail.com. Please include the install id shown under Settings › About when it is about your data.

Common questions

Where does the vocabulary come from? The deck ships inside the app. There is nothing to import.

Where is my data? On your phone. Nothing leaves the device unless you ask for a word note or a story; those requests go to our gateway and then to OpenAI, as the Privacy Policy describes.

Is Octo free? Yes, currently, with no subscription and no in-app purchase. Word notes and stories have usage limits, which the app shows you when you reach them.