Bad night?
It's okay.
After a late shift, exam crunch, or another rough night — let's plan your recovery, starting today
How's my sleep?
Tell us your usual sleep pattern — we'll show you where you stand
90-min sleep cycle theory × age-based recommendations × sleep debt correction algorithm
What Sleep Science Says
SleepNudge is built on validated sleep research
Sleep Cycles
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 Half-life
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)
Social Jet Lag
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)
Why SleepNudge?
Recovery companion
Last night is gone — that's okay. SleepNudge helps you recover, starting today.
Behavioral-science-backed recovery guidance
Comfort, not commands
No 'sleep like this' lectures. Just the best you can do tonight, together.
Companion tone — never a strict coach
Built around your life
Shift nurses, exam-crunching students, late-night workers — recovery that fits your reality.
Persona-based recovery modes
Upcoming features
Coming soon
Today's recovery plan
Based on last night's sleep and today's energy, we'll build your recovery plan.
Caffeine cutoff alert
We'll tell you when to stop coffee — for the recovery sleep you need tonight.
Sleep debt recovery
Recover accumulated sleep debt without burning out — one realistic step at a time.
Persona-based recovery modes
Shift work, exam crunch, late nights — a recovery plan tailored to your life.
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
Frequently Asked Questions
Core features are free. Daily recovery plans and sleep debt diagnosis are always free. Persona-based recovery modes (shift workers, students, late-night workers) and advanced coaching are available in Premium.
Nope! Just the app. SleepNudge focuses on pre-sleep coaching, not sleep tracking.
No. SleepNudge isn't about tracking last night — it's about recovering after a rough one. A 3-second morning check-in gives you today's recovery plan.
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.
SleepNudge is launching soon
We'll let you know the moment we launch