Terms of Service

Last updated: October 1, 2026

yinian is an AI assistant independently developed and operated by an individual, and is currently in a limited trial. These terms apply to yinian accounts and the cloud services yinian provides. The developer can be reached at support@yinian.ai. For how personal information is handled, see the Privacy Policy.

Accounts and sign-in

Sign in with an email address or Google account that you own or are authorized to use, and keep your verification codes and device access secure. Completing verification for the first time creates an account; signing in to the same account by different methods does not grant the free allowance more than once. Sign-in sessions last at most 30 days, after which you must verify again; signing out revokes the current session.

Free allowance and billing

Each account can currently use 50 credits per calendar month (Beijing time); unused credits do not carry over. Cloud calls are billed by actual usage under the credit rules for each capability. Free credits cannot be transferred, withdrawn or exchanged for cash. Credits are not reserved when a request starts; once actual usage reaches the monthly allowance, new cloud calls stop.

Requests already accepted may take final usage slightly over the allowance; that excess does not become a debt and you will not be charged for it automatically. Paid purchases and subscriptions are not yet available. Any changes to feature availability, the free allowance or future pricing will be announced in the app or on the website; completed calls are handled under the rules that applied to them.

Acceptable use and responsibility

Comply with applicable law; do not infringe others' privacy, intellectual property or other legal rights; and do not abuse verification codes, accounts or cloud resources. When you submit content to the service, you must have the right or authorization to process it.

AI answers, search results and suggested actions may be inaccurate. Check them before relying on important conclusions or carrying out actions with real-world effects. You keep your rights in the content you provide; use of third-party content remains subject to its owners' rights and licenses.

Trial, suspension and termination

During the trial there may be maintenance, features may be temporarily unavailable, or the service may be interrupted; continuous availability is not guaranteed. In cases of abuse, security issues or unusual usage that needs review, the relevant account or calls may be suspended; if you disagree, contact the developer to review it.

You can stop using the service at any time, sign out, or request account deletion. If the free cloud service ends or changes significantly, notice will be given in advance where reasonably practicable. Nothing here excludes rights or liabilities that cannot be excluded under applicable law.

Feedback and changes

If you run into account, usage or service problems, contact the developer with the relevant time and a description of the issue. Never send passwords, verification codes or API keys. Updated terms will show their date; changes that need your further confirmation will be communicated separately.