When is your mind sharpest? Find your personal peak window.
Lark, Fox, Owl or Wolf – 12 questions show you when you think, sleep and perform.
Start test – 90 seconds✓ Scientifically validated · Based on established chronotype questionnaires (MEQ) and complemented by modern chronobiology concepts such as social jetlagWhat you get
Free
- ✓Your chronotype: Lark, Fox, Owl or Wolf
- ✓Your personal peak window (when your mind is sharpest)
- ✓3 actionable insights about your rhythm
Premium Report · €9.99
- ✓Detailed premium report with hour-precise times for your MEQ score
- ✓Circadian performance curve (cognitive, creative, physical) + optimal daily schedule
- ✓Sleep, nutrition and training timing tailored to your rhythm
- ✓Evidence transparency, work-life tips, partner compatibility
- ✓7-day experiment – daily tasks that put your chronotype into practice
Why Circadio?
90 seconds instead of 30 minutes
Classic chronotype tests take forever. Circadio distills the science into 12 targeted questions.
Concrete, not abstract
No vague "You're a morning person". You get specific times: when to think, sleep, and exercise.
Immediately actionable
Free result + optional report with a daily structure template you can use tomorrow morning.
What is a chronotype?
Your chronotype determines when you are biologically at peak performance. It is based on your circadian rhythm – your internal clock that regulates sleep, alertness and cognitive performance.
🐦 Lark · Early riser | 🦊 Fox · Flexible middle type | 🦉 Owl · Late type | 🐺 Wolf · Night person