Help and Support

Select China A, Hong Kong or US stocks on the home page, enter a company or symbol and sign in to view daily closes and buy and sell reference ranges.

The Web uses the same oscillation strategy as the App. Insufficient history or unsuitable stocks receive no active signal.

Trading hours, holidays, and data-source update times vary by market. Check the market-data date and analysis timestamp shown on each page.

If no result is available, the source may be delayed, history may be insufficient, or analysis may still be processing. Please try again later.

Buy and sell ranges are calculated from recent daily prices. They are not guaranteed execution prices or promises of profit. Daily closes are not real-time quotes; check the data date.

Consider your own risk tolerance, company fundamentals, and current market information before making a decision.

The Web supports Google, X or email and password. Google and X sign-in create an account on first use, or you can register with email. If you forget your email account password, contact us through Feedback.

Never share passwords or verification codes. If you notice unusual account activity, change your password and contact us through Feedback.

Three starter stocks are free. Basic, Plus and Pro allow 1, 10 and 50 personal watchlist stocks respectively. Save other stocks to view their ranges. Expired memberships revert to Basic allowances; adjust the watchlist or upgrade to view stocks beyond that limit. Membership and watchlist are shared with the App.

App Store subscriptions are billed and renewed by Apple. Use Restore Purchases in the app, or manage renewal in your Apple Account subscription settings.

If you still need help, submit the issue through Feedback. Include your device, browser or app version, ticker, time of the issue, and steps to reproduce it.

Redact unrelated personal information from screenshots. Never send passwords, verification codes, or payment-card details.