Support
DeepSleep is an iOS app that calculates the most efficient wake-up times based on your sleep cycles. Check the FAQ below or contact us with your questions.
Frequently Asked Questions
How are recommended times calculated?
We use your current time + fall-asleep duration + 90-minute sleep cycles (4th, 5th, and 6th cycles). The best times to wake during lighter sleep stages are highlighted.
Why won't my alarm set?
iOS 26 or later is required. Make sure AlarmKit permission is granted under Settings → DeepSleep → Alarms. If you skipped the permission screen on first launch, reopen the app and check permissions again.
Is notification permission required?
Notification permission may be requested as a fallback when AlarmKit is unavailable or as a backup. AlarmKit is the primary path for alarms.
What is fall-asleep duration?
The time it takes to fall asleep after getting into bed. For most people, 10–20 minutes works well; adjust based on your own experience.
Where is my data stored?
Your preferences are stored only on your device. No account is required. See our Privacy Policy for details.
How do I cancel my subscription?
Go to Settings → Apple ID → Subscriptions. Cancellations for purchases made through Apple are managed by Apple.
Contact
Technical support and general inquiries:
support@exlinetr.comWe typically respond within 1–3 business days. Please include your device model, iOS version, and a brief description of the issue.
System requirements
- iOS 26.0 or later (required for AlarmKit)
- Internet is only needed for legal pages; core calculations work offline