Sleep Smart: Smart Alarm
Wake at your lightest sleep
About
This app uses your Apple Watch data to wake you during your lightest sleep phase within a set window. It ensures you're always woken by your deadline, provides detailed sleep tracking, and offers insights into your sleep patterns. All features are available for free with no subscriptions or ads.
What's New in Sleep Smart
1.0
August 18, 2026
FAQ
How does Sleep Smart wake me up?
Sleep Smart uses your Apple Watch's heart rate and motion data to detect your lightest sleep phase. It then triggers the alarm within a customizable window before your set deadline, ensuring a gentler wake-up experience.
Does Sleep Smart always wake me up on time?
Yes, Sleep Smart guarantees a wake-up by your latest set time. If it cannot detect a light sleep phase within your chosen window, it will still ring at your deadline to ensure you don't oversleep.
What kind of sleep data does Sleep Smart track?
Sleep Smart tracks your heart rate and motion overnight to create a hypnogram showing awake, light, and deep sleep phases. It also provides a morning summary including time asleep, time in bed, deep sleep duration, awakenings, and a sleep score.
Is Sleep Smart free to use?
Yes, Sleep Smart is completely free. All features, including smart wake, sleep tracking, and insights, are available without any subscriptions, in-app purchases, or premium tiers.
Does Sleep Smart have ads?
No, Sleep Smart is ad-free. The app is designed with privacy in mind and does not contain any advertisements, analytics, or trackers.
What devices are required to use Sleep Smart?
You need an iPhone with iOS 17 or later and an Apple Watch with watchOS 10 or later. The Apple Watch must be worn overnight to collect the necessary sleep data.
Can Sleep Smart wake me up silently?
Yes, Sleep Smart offers a haptic-only mode. This allows you to wake up using vibrations on your Apple Watch without any sound, which is ideal for not disturbing a partner.
How often is Sleep Smart updated?
Sleep Smart was last updated on August 18, 2026, with version 1.0. While specific update frequency isn't detailed, the app is available on the latest iOS and watchOS versions, suggesting ongoing support.
