Diagnose your sleep habits and find the optimal bedtime — backed by peer-reviewed sleep research
Enter your usual sleep pattern and we'll diagnose your sleep health
90-min sleep cycle theory × age-based recommendations × sleep debt correction algorithm
SleepNudge is built on validated sleep research
Each cycle is ~90 min. Waking between cycles = refreshed. Mid-cycle = groggy
Dement, W. & Kleitman, N. (1957). Electroencephalography and Clinical Neurophysiology, 9(4), 673–690 (PubMed: 13480240)
Caffeine's average half-life is ~5 hours (range: 3–7h). A 3 PM coffee → 50% still in your system by 8 PM
NCBI Bookshelf: Pharmacology of Caffeine (NBK223808) · Caffeine StatPearls (NBK519490)
If your weekday and weekend sleep differ by 2+ hours, it's like weekly jet lag
Wittmann, M. et al. (2006). Chronobiology International, 23(1-2), 497–509 (PubMed: 16687322)
Other apps analyze last night. SleepNudge guides tonight.
Designed with Behavioral Science nudges
Irregular schedule? That's okay. We find the best sleep within your reality.
Personalized based on chronotype research
A 3-second morning check-in. Recommendations get smarter over time.
Inspired by Micro-habit research
What SleepNudge is building
Get the optimal bedtime based on tomorrow's schedule.
Get notified when it's time to stop drinking coffee — 6 hours before bed.
Realistic strategies to recover weekday sleep debt over the weekend.
Custom sleep strategies for overtime, exams, weekends, and more.
Did you know?
Adults worldwide average just 6.8 hours of sleep
That's below the recommended 7–9 hours
Searches for "how much sleep do I need" grew 60% in the past year
Sleep cycles: Dement & Kleitman, 1957 — PubMed 13480240
Caffeine half-life: NCBI Bookshelf NBK223808
Social jet lag: Wittmann et al., 2006 — PubMed 16687322 · Roenneberg, T., LMU Munich
Core features are free. Daily bedtime recommendations and sleep diagnosis are always free. Advanced coaching and situation modes will be available in Premium.
Nope! Just the app. SleepNudge focuses on pre-sleep coaching, not sleep tracking.
No. Unlike other sleep apps, SleepNudge focuses on 'what to do tonight', not 'what happened last night'. A 3-second morning check-in is all you need.
Built on sleep cycle research (90-min cycles), caffeine half-life studies, social jet lag research, and behavioral science nudge theory.
We're targeting H1 2026. Pre-register to be the first to know when we launch.
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