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Sleep · Routine planning · iPhone & Apple Watch

StayUp 今晚别熬

One question, answered: can you stay up tonight, and what is the latest bedtime. The verdict is derived from your wake anchor, seven-day sleep debt and last night's sleep, with the weights, thresholds and reasons stated openly.

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Tonight's verdict and latest bedtime

The home screen shows the verdict, the latest bedtime and how much budget is left, with at least one numeric reason.

Seven-day sleep debt

See shortfall, balance and surplus on a rolling seven-day window instead of another sleep-stage chart.

Manual records and morning recap

No watch is required. Add any night by hand, then compare last night with tonight's plan in the morning.

Local first, never uploaded

Health and calendar are optional read-only sources. No account, cloud sync, analytics, advertising, in-app purchase or remote AI.

Important notes

StayUp offers general scheduling guidance. It is not medical advice, diagnosis or treatment, and it does not claim to monitor, improve or cure any condition. You can decline health and calendar access and keep using manual entry.