A Different Kind of Sleep Company
You already know
you slept badly.
You don't need
an app to rub it in.
Every major sleep tracker on the market does the same thing: you wake up after a rough night, reach for your phone, and a harsh red number confirms what your body already told you. A low score. A failing grade. A reminder of what went wrong — with no real path forward.
That approach isn't just unhelpful. It's counterproductive. Sleep anxiety — the fear of not sleeping well — is itself one of the most powerful disruptors of sleep. The very tools designed to help you are making the problem worse.
“We built Nightfall because we believed sleep technology should do what a good physician does: tell you the truth on good days, protect you on hard days, and always — always — give you a plan.”
— Dr. Matthew Walker, Founder
Our Promise to You
Guardian. Protector.
Companion.
Nightfall is not a scoreboard. It is not a judge. It is a practice — designed to watch over you, to celebrate the nights your body gets it right, to hold you steady on the nights it doesn't, and to always light the path toward better sleep tonight.
Guardian
On good nights, we reveal every detail — your sleep architecture, cardiovascular recovery, peer comparisons, long-term health trends. Knowledge earned through a great night of rest, delivered with celebration, not clinical coldness.
Protector
On tough nights, we withhold the harsh numbers. No red scores. No failing grades. We acknowledge what happened, remind you that not all nights are alike, and gently note that the detailed stats are there if you want them — but the real focus is forward.
Companion
Every morning, good or bad, Nightfall builds you a personalized plan for tonight — drawn from what our models have learned about your unique physiology. Not generic advice. Not someone else's routine. Yours. Because what we can change is tonight — and we've got you.
What Other Trackers Do
Wake you up with a harsh red score that confirms what your body already told you
Show you exactly how badly you slept with no actionable path forward
Offer generic "sleep hygiene tips" identical for every user, every night
Create sleep anxiety — the fear of a bad score — which itself disrupts sleep
What Nightfall Does
Celebrates good nights with full data transparency and rich visualizations
Protects you on bad nights — withholding harsh scores, leading with support
Builds a personalized plan for tonight based on your unique ML-identified patterns
Connects you to real clinical care (Nightfall Rx) when insights alone aren't enough
Sleep is not a problem to be solved.
It is a practice to be honored.
BLOOD WORK, BUT FOR SLEEP
Good Morning · October 15, 2025
Your body honored its
rest last night.
Every cycle unfolded as it should. Let us walk you through the quiet architecture of your night — each stage a ritual of repair, each heartbeat a measure of recovery.
“Nearly two hours in deep restorative sleep — the phase where tissue repairs, growth hormone releases, and memories crystallize from fragile traces into permanent records. Your nightly practice is bearing fruit.”
Your Night, Stage by Stage
The quiet architecture of rest.
Every cycle, every transition — mapped in real time from your wearable, then interpreted by our models to find meaning in the rhythm.
Your heart rate descended gracefully into the recovery zone during each deep sleep cycle — reaching 51 bpm at its quietest. This is your cardiovascular system in its most natural state: resting, repairing, rebuilding. A well-regulated rhythm, steady as a calm breath.
Your Sleep vs. Your Peers
Where you stand — and where you flourish.
Compared against age and sex-matched benchmarks from 9,296 clinical sleep studies.
“You're outperforming your peers across nearly every measure. Your sleep latency — the ease with which you surrender to sleep — is 38% faster than average. Your body trusts the ritual of rest. That trust is the foundation of everything.”
What Shapes Your Best Nights
Your sleep is not random — it reflects your practice.
Our models analyzed hundreds of your nights to discover what truly moves the needle for your unique physiology.
Stable Body Temperature
Nights when your body temperature stays low and steady are your highest-quality nights — longer sleep, more REM, higher efficiency. Thermal stability lets your brain stay in a REM-friendly zone.
Lower Resting Heart Rate
Your best nights happen when your sleeping RHR is lower — a sign your body is calm. Lower RHR links to higher sleep efficiency and more total sleep. Late meals, alcohol, heat, or stress push it up.
Daytime Activity Balance
Long stretches of low activity during the day are tied to shorter sleep and less REM. Moderate activity earlier in the day — not late — sets the stage for deeper, more restorative sleep.
Good Morning · October 16, 2025
Not every night unfolds
the same way.
We know last night wasn't your most restful. We also know this: one night doesn't define your practice. What matters most is what happens tonight — and we've already prepared a plan rooted in what works for your body.
Your body knows how to recover.
We're not leading with numbers today. Instead, let's turn toward what we know works for your unique physiology — and honor tonight as an opportunity to reset. Your data patterns tell us exactly what to do.
If you'd like to see last night's detailed stats, they're available below — but let's not forget to focus on what we can change, which is tonight.
“Other apps would show you a harsh number right now and leave you feeling defeated. We won't do that. We honor the practice, not the perfection. Let's build tonight together — we've got you.”
Built from Your Unique Data Patterns
Tonight's ritual — prepared just for you.
Based on what our models have learned from your highest-quality nights, here's the evening practice that works for your body.
Honor a Fixed Bedtime Tonight
Your data shows that bedtime consistency is the single strongest predictor of your next-day recovery. Aim for 10:30 PM — even 15 minutes closer to your target bedtime moves the needle.
Cool Your Sleep Sanctuary
Your profile shows thermal stability is one of your top three sleep quality predictors. Set your bedroom to 65°F (18°C). On nights where your temperature stayed low and steady, your REM increased by 18%.
Begin Your Wind-Down Practice 60–90 Minutes Before Rest
Stop chores and stimulating activity. Transition to calm practices — light stretching, breathing, reading. This lowers arousal so you fall asleep faster and wake up less overnight. Your WASO drops by 17 minutes on nights you follow this pattern.
Want to see last night's detailed stats? Tap here to expand. But remember — tonight is what we can change.
Your Long-Term Health & Sleep
Small changes tonight, deep protection over time.
Your overall long-term sleep-related health risk is Low. Here's what a modest improvement in your nightly practice could do.
The biggest factor in your risk profile is time spent awake during the night. The good news? Every other metric looks strong. And the evening practice we've built for tonight targets exactly this — fewer wake-ups, more consolidated sleep. You're closer to optimal than you think.
When You Need More Than Insights
Nightfall Rx — because sometimes
rest needs a gentle hand.
Nightfall IQ reveals the story of your sleep. Nightfall Rx helps when behavioral practice alone isn't enough. Together, they form the first true closed-loop system in sleep medicine — where every prescription is guided by your continuous data, not a single questionnaire.
The Closed-Loop Difference
Unlike typical telehealth, your Rx clinician sees your actual sleep architecture in real time. They can track how medications affect your REM, deep sleep, efficiency, and WASO — then adjust with precision. No guesswork. No “how do you feel?” as the only data point.
Safe, Modern, Data-Guided
We begin with CBT-I (Cognitive Behavioral Therapy for Insomnia) — the gold standard. When medication is needed, we use modern, non-addictive options: low-dose Doxepin, Trazodone, and next-generation DORAs. No benzodiazepines. No Z-drugs. Safety is not negotiable.
“We honor your sleep so you can wake into your fullest life. Whether that means gentle guidance from your data, or a helping hand from a sleep physician — we've got you. You are not alone in this practice.”