A family playing together, smiling and at easeSleepSafe app displaying real-time heart rate monitoring using physiological signals to detect and prevent nightmares.Two people sitting together, one resting their head on the other's shoulder in a moment of quiet comfort and support.Your Data Stays Yours

    Better nights.Better lives.

    SleepSafe detects nightmares on your Apple Watch and gently guides you back to peaceful sleep.

    10,000+ hours monitored 250+ monthly users Free · No account · 1-min setup
    "SleepSafe has truly changed my life. I struggle with PTSD-related nightmares and have never responded well to medication. I now don't dread sleep."
    Zith L.-App Store Review

    How it works

    Four steps. Zero effort.

    Wear to bed

    Activate monitoring with SleepSafe.

    Auto-monitors

    Heart rate, movement, and audio patterns are analyzed on-device.

    Gentle intervention

    Subtle haptic pulses guide you away from distress.

    Morning insights

    Review your night and track improvement over time.

    Detects distress before you wake up

    Machine learning analyzes heart rate patterns, movement, and audio signatures in real time, identifying nightmares as they begin, not after they've jolted you awake.

    • Heart rate variability analysis
    • Movement pattern recognition
    • Stress detection
    • Audio signature detection
    SleepSafe app displaying real-time heart rate monitoring using physiological signals to detect and prevent nightmares.
    Person sleeping peacefullyApple Watch delivering a gentle haptic vibration

    Gentle enough to keep you asleep

    Subtle haptic patterns on your Apple Watch guide your nervous system away from distress, without waking you up. Adjustable intensity lets you find your perfect level.

    Understand your sleep, night by night

    Morning reports show what happened, when interventions triggered, and how your sleep quality trends over weeks and months. Integrates with Apple Health.

    SleepSafe sleep monitoring overview
    SleepSafe detailed sleep insights

    Real people. Real sleep.

    Free of PTSD Nightmares!

    "SleepSafe has truly changed my life. I struggle with PTSD related nightmares, and have never responded well to any medication. [..] I now don't dread sleep, and know that I am protected from nightmares [...]"

    Zith L.App Store review

    Such a great app for peace of mind at night!

    "Really happy with life-changing app SleepSafe. Highly recommended to any parent dealing with night terrors!"

    Sarah M.App Store review

    "The gentle interventions are perfect. I wake up feeling rested instead of anxious."

    David L.Beta tester

    Your data never leaves your device.

    All processing happens on-device. No account. No recordings stored. Your sleep data stays in Apple Health, under your control.

    Stories & Insights

    Your Data Stays Yours
    Privacy

    Your Data Stays Yours

    Sleep is one of the most personal things there is. Here is how SleepSafe handles your data, and why you never have to think about it.

    SleepSafe Team
    2 min read
    Two people sitting together, one resting their head on the other's shoulder in a moment of quiet comfort and support.
    Research

    PTSD and Sleep: Why Nightmares Are More Than Just Bad Dreams

    The hardest part of the day for many trauma survivors isn't waking life. It's falling asleep. Research now shows why PTSD nightmares are so persistent, and what can actually be done about them.

    SleepSafe Team
    5 min read
    SleepSafe app displaying real-time heart rate monitoring using physiological signals to detect and prevent nightmares.
    Product Launch

    An App That Fights Nightmares While You Sleep

    For millions worldwide, bedtime isn't peaceful - it's a nightly confrontation with terror. Now, a small team believes they've found a way to help: an app that watches while you sleep.

    SleepSafe Team
    3 min read
    View all stories

    Questions & answers

    SleepSafe uses a sophisticated statistical model that analyzes three key indicators: heart rate from your Apple Watch, movement patterns during sleep, and audio signatures detected through secure on-device processing. This multi-sensor approach allows us to accurately identify distress during sleep.
    No, our interventions are specifically designed to be subtle. We use gentle haptic patterns on your Apple Watch that guide your nervous system away from the nightmare without bringing you to full consciousness. And of course - you can always adjust the intensity in settings.
    All processing happens locally on your iPhone and your Apple Watch. No data leaves your device. We don't even require an account to use the app.
    SleepSafe is optimized to use less than 30% of your Apple Watch battery during an 8-hour sleep session. Most users can easily get through the night with a 50% charge.
    SleepSafe is designed to detect nightmares and night terrors/sleep terrors specifically. While it may help with sleep quality overall, it's not a medical device and doesn't diagnose or treat sleep disorders. Always consult your doctor for medical conditions.

    They're actually quite different! Nightmares happen during REM sleep (late night), while night terrors occur during deep sleep (early night).

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