It's not how long you sleep, it's when you wake up. Standard alarms interrupt your deep sleep. DriftWake learns your unique cycles and wakes you at the exact moment your brain is ready.
Fixed 90-minute blocks. Same for everyone. Same every night. Based on Kleitman's 1963 observation. Real studies show 29.3% variance within a single night — meaning this model can miss your optimal wake time by 30+ minutes.
Progressive cycles that mirror real sleep architecture. First cycle is shorter and deep-sleep heavy. Later cycles are longer and REM-heavy. Then it calibrates to YOUR personal pattern over 14 nights.
Not just another calculator. An adaptive system that learns your biology.
Starts with a research-backed progressive model on Day 1. By Day 14, it's calibrated to your unique cycle pattern — your average duration, your variance, your first-cycle timing. No other app does this.
Probability-based wake zones instead of single exact times. See when you're likely in light sleep vs. deep sleep, with confidence scores.
Scientifically-tuned frequency escalation — not just turning volume up. Activates your reticular activating system without cortisol spikes.
Your unique cycle pattern visualized. Average duration, variance, progression — shareable like Spotify Wrapped for sleep.
Caffeine, alcohol, exercise, sleep debt — the model adjusts for factors that shift your cycle timing on any given night.
Post-alarm sequence: gentle vibration → warm-tone audio → optional 60-second guided activation to speed up full cortical awakening.
| Feature | Other Apps | DriftWake |
|---|---|---|
| Cycle Model | Fixed 90 min ✗ | Progressive + adaptive ✓ |
| Personalization | Adjustable latency only | Full cycle calibration over 14 nights |
| Wake Predictions | Single exact times | Probability windows with confidence % |
| Context Awareness | None ✗ | Caffeine, alcohol, exercise, debt ✓ |
| Smart Alarm | Basic movement detection | Movement + acoustic ramp + anti-inertia |
| Sleep Architecture | Light / Deep / REM bars | Cycle boundaries + stage mapping |
| Science Basis | 1963 Kleitman observation | 2024 Cajochen (6,064 cycles), 2025 Siclari |
| Gets Smarter | No ✗ | ~70% Day 1 → ~90%+ Month 1 ✓ |
First 10,000 users get 6 months of Pro free.
No credit card. No spam. Just better mornings.