Privacy Notice

Information we collect

• Waitlist email, signup source, and limited campaign tags you arrive with.
• Account identity, profile choices, language level, preferences, onboarding answers, and plan or usage records.
• Conversation text, reading activity, saved vocabulary, pronunciation results, and learner-memory summaries used to continue your practice.
• Audio you choose to submit for speech recognition, conversation, pronunciation feedback, or speech generation.
• Basic operational logs needed to secure, diagnose, and keep the service available. We do not store raw IP addresses in the waitlist table.

How we use information

We use waitlist data to manage early access and send material launch updates. Account and learning data is used to provide practice, personalise difficulty, remember useful learning context, enforce usage limits, prevent abuse, and improve reliability. We do not sell personal information.

Storage and service providers

Supabase provides managed database, authentication, and file storage services. Depending on the feature and configuration, conversation text or audio may be processed by AI and speech providers such as OpenRouter and its routed model providers, Alibaba Cloud/DashScope, OpenAI, or Microsoft Azure. These providers process data under their own service terms and may operate in other countries.

Audio and AI processing

Audio is sent only when you use a voice feature. Chabu uses it to produce a transcript, response, playback, or pronunciation feedback. The app does not intentionally keep raw recordings after processing unless a feature clearly says otherwise, but infrastructure and processing providers may retain limited data under their security, abuse-prevention, or service policies. AI outputs can be wrong and should not be treated as professional advice.

Retention and deletion

Waitlist records are kept until launch communications are complete or you ask us to remove them. Account and learning records are kept while an account is active and for a reasonable period needed for security, recovery, and legal obligations. Retention periods will be finalised before public account signup. You may ask to access, correct, export, or delete your data.

Age and safety

The service is not directed to children under 13. Anyone under the age required to consent to data processing where they live should use the service only with a parent or guardian’s permission. Private testing includes age-sensitive safeguards, but no automated safeguard is perfect.

Your choices and contact

You can decline to join the waitlist, stop using voice features, or request removal from the waitlist. For privacy questions or data requests, chabuapp@gmail.com. We may update this notice as the product and its providers change.