Terms of Service

1The service

FE Exam AI Prep is an exam-preparation study tool made up of the iOS apps and the web member center (together, “the service”). One account carries your plan, progress, streak, and subscription across every screen. By creating an account or using the service you agree to these terms.

2Your license & fair use

We grant you a personal, non-transferable, revocable license to use the service for your own exam preparation. A subscription is tied to the Apple ID that bought it and is for one person.

• Don't resell access, share an account commercially, or use one account for a class or company — we may limit devices or restrict access if an account is used for improper profit.
• Don't scrape, bulk-export, or republish the question bank, solutions, formula reference, or course videos.
• Don't access the service with automated tools except the interfaces we provide.

3Accounts

Accounts are created in the app (with email, Sign in with Apple, or Google). On the web you sign in to the same account with an email link or password. You're responsible for keeping your sign-in method secure; tell us at contact@xingshiyu.com.cn if you think someone else is using your account.

4Subscriptions & billing

• Where you buy. Every purchase happens in the iOS app through Apple. The web member center never takes payment — it shows your subscription status read-only.
• Auto-renewal. Every plan (Monthly, Annual, and Max Monthly/Annual) is an auto-renewable subscription. Payment is charged to your Apple ID at confirmation of purchase, and the subscription renews automatically for the same price and period unless you cancel at least 24 hours before the current period ends. The renewal is charged within 24 hours before each period ends.
• Cancel & refunds. Manage or cancel anytime in your Apple ID account settings. Refunds are handled by Apple under Apple's policies.
• What plans include. Paid plans differ in price, billing period, and monthly AI-credit allowance; Max additionally unlocks mock exams, the published FE course-video library, and paired study notes. Current details are always shown on the plan screen before you buy.

Your use of the iOS apps is also governed by Apple's standard Licensed Application End User License Agreement.

5AI credits & AI features

AI credits are a consumable used only for optional live-AI features (the AI coach, on-demand explanations, diagnoses). They never expire, have no monetary value, and cannot be transferred or exchanged for cash. The core study experience does not require them.

AI-generated answers can be wrong. The coach is a study aid, not an authority on the exam — check anything that matters against the public exam specification and your own judgment.

6Our content & how questions are made

All practice questions are original — generated from first principles of the publicly available exam specifications and passed through a multi-step verification pipeline (independent solvers, a critic, a math verifier, a style auditor, and a difficulty calibrator) before they ship. We never copy or paraphrase real exam questions or third-party question banks.

If you see anything wrong, use “Report an issue” on any question — repeated independent reports automatically suspend a question from the practice pool while it's rechecked.

The service's content (questions, solutions, videos, the formula reference, and the software) is ours or our licensors'. Notes you write in the product are yours.

7Marketing language we will not use

You will never see “real exam questions”, “past exam questions”, a pass guarantee, or any claim of endorsement by a testing organization in this product. We say “original practice questions”, “exam-style practice”, and “readiness tracking” — because that's what this is.

8Independence & no guarantee

The service is provided for study purposes “as is”, without warranty of any kind. Readiness estimates are study signals, never predictions — we do not guarantee any exam result.

9Limitation of liability

To the maximum extent permitted by law, we are not liable for indirect, incidental, or consequential damages arising from your use of the service, and our total liability for any claim is limited to the amount you paid for the service in the twelve months before the claim. Nothing in these terms limits liability that cannot be limited by law.

10Ending or changing things

• You can stop using the service anytime; delete your account from Settings on the web or in the app. Store billing must be cancelled separately in your Apple or Google account settings.
• We may suspend or terminate accounts that violate these terms, after notice where practical.
• If we make material changes to these terms, we'll update the effective date above and tell you in the app or by email before they take effect.