Last updated: October 21, 2026
Yiyan (熠言) is a personal AI assistant. It stores conversations and working files locally and connects directly to third-party AI providers using an API key configured by you. Yiyan does not provide an account, subscription, usage quota, advertising service, analytics service, or cloud conversation-storage service.
When you use an AI feature, Yiyan sends the information needed to complete your request directly to the model provider you selected. This may include:
Supported providers include DeepSeek, Qwen (Alibaba), GLM (Zhipu), Kimi (Moonshot), and Minimax. Each provider processes data under its own privacy policy and retention terms. Yiyan does not control a provider's retention or model-training practices. Review the policy of your selected provider before use.
Yiyan can access websites and download files when you request those actions. The destination website receives normal network information such as your IP address and request headers. The optional location tool contacts third-party IP-geolocation services and may return approximate city, region, timezone, and coordinates. It does not use GPS.
Your model-provider API keys are stored in the app's local preferences on your device. They are sent only to the corresponding provider endpoints to authenticate model, model-list, or balance requests. Yiyan does not transmit API keys to a Yiyan-operated server. You can replace or delete a key from the text-model settings.
The following data is stored locally in the app's private storage:
Yiyan disables Android cloud backup for this app. You can export your local data from Settings. Clearing app storage or uninstalling the app removes app-local data, subject to operating-system behavior and any files you separately exported or shared.
Microphone access is used for voice input. Speech recognition runs on the device using downloaded models. Raw microphone audio is not uploaded by Yiyan. If you send the resulting transcript to an AI model, the transcript is processed like other conversation text.
If you contact support or report an AI response by email, we receive the sender address, message content, and any response text or diagnostic details you choose to include. We use this information only to investigate the report, provide support, and improve safety. Support records are retained only as long as reasonably needed for those purposes or legal obligations. Do not include API keys or other credentials.
Yiyan does not operate a server that stores your account or conversation history. Local data remains until you delete it, clear app storage, or uninstall the app. Data already sent to an AI provider or website is governed by that third party's retention policy. Files exported outside the app must be deleted from their destination separately.
Yiyan is not directed to children under 13. Third-party AI output may be inaccurate or unsuitable for minors; parental guidance is recommended.
We may update this policy when app functionality or legal requirements change. The current revision date is shown above.
For privacy questions or to report inappropriate AI-generated content, use the in-app report action or email support@3vonline.com.