Smart Nap: Power Nap Alarm
Sleep Detection & Wake Alarm
About
This app helps you take effective power naps by automatically detecting sleep onset with a paired Apple Watch. Set your desired nap duration and a strict wake-up cutoff to ensure you don't oversleep. Track your nap history and efficiency to optimize your rest.
What's New in Smart Nap
1.1
October 9, 2026
• Improved stability and fixed issues with alarms. • Added Japanese language support. • Added a short guide to Apple Watch sleep-onset estimates and starting the nap timer manually on iPhone.
MoreSubscriptions & In-App Purchases
Sleep Detection Weekly
Sleep-onset detection, hard cutoff and nap history
FAQ
Does Smart Nap have ads?
No, Smart Nap does not contain advertisements. The app is ad-free, ensuring an uninterrupted user experience.
How does Smart Nap detect sleep onset?
Smart Nap uses a paired Apple Watch to establish a heart-rate baseline and monitors changes in heart rate, heart-rate variability, and movement to estimate when you fall asleep.
What are the subscription options for Smart Nap Pro?
Smart Nap Pro offers unlimited naps with sleep-onset detection and full nap history. Subscriptions are available weekly or annually, with a 3-day free trial for the annual plan for eligible users.
Can I use Smart Nap without an Apple Watch?
Yes, without an Apple Watch, Smart Nap functions as a manual-start nap timer. You can still set your desired duration and wake-up cutoff for the initial alarm.
What is the age rating for Smart Nap?
Smart Nap has an age rating of 17+. This is likely due to the health data processing and potential for advanced features.
How often is Smart Nap updated?
The app was last updated on September 22, 2026, indicating recent development activity. Specific update frequency is not detailed, but it is actively maintained.
What devices is Smart Nap compatible with?
Smart Nap runs on iPhone with iOS 26 or later. Automatic sleep-onset detection requires a paired Apple Watch running watchOS 26 or later.
What happens if my nap duration plus estimated sleep onset goes past my cutoff time?
If your nap duration after estimated sleep onset would end past your set cutoff time, Smart Nap will set the initial alarm for the cutoff time. You can still choose to snooze when the alarm rings.
