Every sleep app uses the same 90-minute cycle from 1963. Modern research says your cycles actually range from 60–130 minutes. DriftWake adapts to YOUR biology — not a textbook guess.
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.