Sleep consistency and chronotype: when you sleep matters as much as how long

Your Chronotype

The Your Chronotype card places you as an Early Bird, Intermediate or Night Owl, with a confidence level of High, Moderate or Low so you know how settled the result is. It also shows your average bedtime, average wake time and sleep midpoint, the middle of your night.

Open it for the Chronotype Analysis screen. It explains what your type means, shows your sleep pattern and schedule consistency, lists your main sleep sessions and describes your circadian rhythm. A 24-hour rhythm timeline, anchored on your wake time, shows how a typical day lines up with your body clock. You also get recommended target bedtime and wake times and suggestions written for your chronotype.

Quality & Consistency

The Quality & Consistency card looks at a window of recent nights instead of just one. It shows your average sleep quality and your average sleep per night, then breaks your schedule down into eight tiles, each with an info pop-up explaining what it means.

• Debt / Surplus: whether you have been sleeping more or less than you need across the window.
• Consistency: how similar your nights have been.
• Efficiency: how much of your time in bed you spent asleep.
• Timing: how well your sleep times fit your body clock.
• Range and Variance: how much your sleep length moves from night to night.
• Avg Bedtime and Bedtime Range: when you usually go to bed and how widely that shifts.

Sleep Trend

Sleep Trend lets you switch between Quality, Duration, In Bed and Bedtime and shows how that measure has moved. A badge tells you how this week compares with last week, or says Stable. You see your average against your goal, your best night, how many nights hit your target, and a scrolling bar chart with a goal line, followed by a short note on what would help most.

Quality & Consistency and Sleep Trend both have a range chip for the last 7, 14, 30 or 60 days, starting at 14. Every window ends on the day you have selected, so you can look back at any stretch of your history.

Why sleep consistency and chronotype matter

Your body clock runs on a roughly 24-hour cycle that controls when you feel alert and when you feel sleepy. Going to bed and waking at very different times, for example late nights at the weekend followed by early alarms on Monday, works against that clock. The result is often called social jet lag: you can sleep enough hours in total and still feel groggy, because the timing keeps moving.

Chronotype describes where your natural timing sits. Some people are wired to sleep and wake early, others late, and most fall in between. Knowing your type helps you set a schedule you can actually keep, rather than fighting your own rhythm. Consistency is one of the simplest levers you have: a steady bedtime and wake time tends to make falling asleep easier and mornings feel better, even before you change anything else.