Nyrin Alarm 眠刻

Support

Nyrin Alarm helps plan one alarm for tonight using estimated sleep cycles. The current version is free, requires no account, and supports iPhone with iOS 26 or later.

Contact support · nyrintech@gmail.com

Getting started:

Choose your target wake-up time and estimated time to fall asleep, review the suggested cycles and actual alarm time, then confirm. If a full cycle does not fit, the alarm may be later than your target; check the warning shown.

Still awake?

Recalculate from the current time. Your existing alarm remains active until you confirm a new time.

Alarm problem?

Check the app’s alarm permission in iOS Settings, your device’s date and time, and system alarm volume. Return to the app to check its status. Contact support if the problem persists.

Limitations:

One alarm for tonight with the system default sound. Repeating alarms, snooze, custom sounds, and multiple plans are not available. A 90-minute cycle is an estimate, not a measurement of sleep stages or a promise about how you will feel. This tool is not intended for diagnosis or treatment.

Deleting data:

Cancel unwanted alarms, then use Delete App in iOS to remove local data. Offload App retains data. Manage backups separately through Apple settings.

Contact:

Email nyrintech@gmail.com with your iPhone model, iOS and app versions, when the issue occurred, and steps to reproduce it. Screenshots are optional; hide personal details and never send passwords. Correspondence is handled as described in the privacy policy.