Smart wakeup#

Smart Wake-up identifies the perfect moment to wake you up so you can start your day feeling refreshed.

Waking up during light sleep feels natural - similar to waking up without an alarm on a weekend. In contrast, being woken up during deep sleep often causes “sleep inertia,” leaving you feeling tired, groggy, and disoriented.

Menu Path: Settings → Alarms → Smart wake up

How it Works#

When you enable Smart Wake-up, you define a Smart period (a time window before your set alarm). During this window, the app monitors your movement to detect light sleep.

Example:

  • Alarm Time: 8:00 AM
  • Smart Period: 30 minutes (default)
  • Result: The app will wake you between 7:30 AM and 8:00 AM once it detects you are in a light sleep phase. Your set alarm time (8:00 AM) remains the absolute latest possible wake-up time.

Smart Wake-up requires active sleep tracking to detect your sleep phases. If you prefer not to track all night, you can use the Smart Period option with Automatic Sleep Tracking.

Key Settings Explained#

Smart Period#

Choose the duration of the wake-up window before your alarm.

  • Disabled: The alarm triggers exactly at the set time.
  • Duration: Select from 5 minutes up to several hours.
  • Power Nap: A special mode that wakes you after the alarm time. Learn more here.

Nap Smart Period#

Sets the wake-up window specifically for naps started via shortcuts or the tracking screen.

  • Disabled: The nap alarm triggers exactly when the timer ends.
  • Power Nap: Applies the same logic as the main alarm power nap mode.

Movement Sensitivity #

Adjusts how much movement is required to trigger the alarm.

  • High Sensitivity: Small movements can trigger the wake-up.
  • Low Sensitivity: Requires more pronounced body movement.

Not Before My Sleep Goal#

Prevents the alarm from triggering until you have reached your Daily Sleep Duration Goal or your originally scheduled alarm time.

This option can sometimes make Smart Wake-up ineffective, as the app may be forced to ignore light sleep phases in favor of meeting your duration target.

❓ FAQs & Troubleshooting#

Why does my alarm always ring at the *very beginning* of the smart period?
  • Cause: The sensitivity is set too high, causing minor nighttime shifts or bed movements to be misclassified as light sleep.
  • Fix: Lower the sensitivity:
    • Go to Settings️ → Alarms → Smart wake up → Movement intensity.
    • Reduce the sensitivity level slightly.
Why does my alarm ring before my set alarm time?
  • Cause: This is the intentional design of Smart Wakeup! The app wakes you up within your chosen Smart Period (e.g., up to 30 minutes before your alarm time) because it detected a light sleep phase.
  • Fix: If you prefer to wake up at the exact target time:
    • Reduce the Smart Period window (e.g., down to 10 or 15 minutes) under Settings️ → Alarms → Smart wake up → Smart Period.
    • Or turn off **Smart wake up** for one specific alarm in the per-alarm settings under Settings️ → Alarms → Smart wake up.
Smart Wakeup isn't triggering / alarm always rings at the exact alarm time
  • Cause A: Movement sensitivity is set too low. The app isn’t detecting enough movement to register light sleep.
    • Fix: Increase sensitivity under Settings → Alarms → Smart wake up → Movement intensity.
  • Cause B: Sleep tracking isn’t running. Smart Wakeup requires active sensor data to estimate sleep stages.
  • Cause C: Sleep Goal enforcement conflict. If you have **Not Before My Sleep Goal** enabled, the app may prioritize hitting your daily goal over ringing early over ringing earlier during the optimzal moment.
How does Smart Wakeup work if I sleep with a partner?
  • Cause: Movement from a partner sharing the bed can inadvertently trigger your phone’s motion sensor or sonar.
  • Fix:
    • Enable Pair Tracking so both phones can cross-reference movement and filter out partner motion.
    • Use a wearable device for sleep tracking, as it only measures your personal body movement.
Does Smart Wakeup consume a lot of battery?
  • Answer: Full-night sleep tracking consumes some battery. However, if you don’t want to track all night, you can use Smart Period Automatic Start:
    • Go to Settings️ → Sleep tracking → Automatic sleep tracking → Start sleep tracking → Smart period.
    • Tracking will automatically launch 45 minutes before your Smart Period to calibrate and detect light sleep with minimal battery usage.
The alarm went off at maximum volume immediately
  • Cause: You likely missed the initial alarm, and the Backup Alarm went off. If an alarm rings without interaction for 20+ minutes, a backup alarm triggers at full volume to prevent oversleeping.
  • Fix: Enable Gentle Volume (Settings️ → Alarms → Gentle wake up → Gentle volume) to ensure initial alarms fade in gradually.

Need further help? Contact us via Left ☰ Menu → Support → Report a bug.

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