WEIYANG · PRIVACY
Privacy Policy
Last updated: November 7, 2026 · Operator: Nguyen Van Tang
About this policy
Weiyang is operated by Nguyen Van Tang, an individual developer. This policy explains how we handle personal information in the Weiyang app and website. Weiyang provides AI character conversations, storytelling, memory and text-to-speech features for users aged 18 or older. Please read this policy before using the service.
Account and device information
When you sign in, we process the identity identifier returned by the sign-in provider and profile information you provide, such as a nickname or avatar, to create and recognize your account. Guest use also creates an account identifier. To maintain sessions and account security, we process device identifiers, device names, platform, region settings and recent activity times. Region settings are not precise location data. Third-party sign-ins, such as Sign in with Apple and Google Sign-In, are verified by the relevant provider.
Characters, conversations and memory
Conversations, stories and related memories are saved on your device. When you generate a reply, story, summary or audio, the necessary text and context are sent to our servers and relevant providers for processing. Weiyang does not store conversation or story text in its server database. You can review, edit or delete memories in the app, or pause personalized memory. Avoid sharing unnecessary identity documents, passwords, financial account information or sensitive information about other people.
AI and speech providers
Weiyang uses Qwen models to provide AI features. Necessary text and context are sent to relevant service providers to generate replies, summaries and memories, or to support retrieval. For text-to-speech, the text to be read is sent to a speech service provider to synthesize audio. Generated audio is cached on our servers for playback. Relevant service providers handle received information under their own terms and privacy policies. Processing locations and retention practices depend on the services used.
Images and local storage
Personal character covers you select in the creation feature and local drafts are stored on your device. This feature does not upload those cover images to Weiyang servers. Device backups may include this data, depending on your system settings. Character artwork supplied by Weiyang is served from our servers. You can manage photo access through your device settings. Removing the app or its local data may delete local covers and drafts that have not been synchronized.
Purchases and subscriptions
In-app purchases are processed by the store you downloaded the app from: Apple App Store on iOS and Google Play on Android. We process transaction identifiers, products, purchase verification information and subscription status to verify purchases with the store, restore entitlements and prevent duplicate grants. To link a Google Play purchase to the correct account, we give Google Play a one-way identifier derived from your Weiyang account; it does not reveal your account details. We do not directly process your payment card number. Renewals, cancellations, refunds and subscription changes are governed by the purchase rules and processing results of Apple or Google. Deleting a Weiyang account does not cancel an App Store or Google Play subscription; manage subscriptions separately through the store.
Support, safety and operational records
When you submit feedback or a report, we process the contact information, issue description and relevant content you provide to contact you and address the issue. Necessary evidence of reported violations may be retained for safety review. Operational records include request times, endpoints, errors, usage and necessary network or device information to protect the service, troubleshoot problems and account for usage. Conversation text is not written to analytics logs.
Sharing and safeguards
We pass necessary information to relevant providers when needed to offer features such as sign-in, AI generation and payments. Information may also be disclosed as required by applicable law or to address security incidents. We use authentication, access controls and transport protection to limit unauthorized access. No system can guarantee absolute security. You can read product information, policies and support pages on this website without signing in.
Retention and account deletion
We retain information as needed to provide the service and meet security, financial and legal requirements. When you confirm account deletion in the app, we immediately delete the account’s personal information and remove conversations, stories, memories, cached audio, character covers and drafts from the device you are using. Photos in your system library remain unchanged. If you cannot use the app, follow the instructions at weiyangapp.com/delete-account to request account deletion by email. To remove content from a device, clear it on that device. We may keep required transaction records and account deletion status. Access to private audio is revoked immediately and remaining server audio files are removed by cleanup tasks.
Your rights and choices
Use profile, memory, privacy and account settings in the app to review and manage information, pause memory or request account deletion. Contact us for access, correction, deletion or other privacy requests that you cannot complete in the app. We may ask for information necessary to verify account ownership and prevent unauthorized requests.
Age requirements and updates
The service is intended only for users aged 18 or older. Please contact us if you believe a minor has provided personal information to us. We will update this policy and its date when our features or information handling practices change, and provide appropriate notice of material changes.
Contact us
Operator: Nguyen Van Tang (individual developer). Support and privacy email: [email protected]. You can also submit a request through support in the app. Describe the account and issue involved, but do not send passwords, complete payment credentials or unnecessary sensitive information by email.