Circadian rhythm tracker
Every cell in your body runs on a 24-hour clock — and when you eat is just as important as what you eat. Eating at random times wrecks your metabolism, disrupts your hormones, and destroys your sleep. But you can't fix what you can't measure. OutLast is the first circadian rhythm tracker that scores your alignment in real time: log your meals, see your circadian score update instantly, and finally eat in sync with your biology.
Free to use · No credit card · 2 sec to log
Also track: Fasting · Sleep · Supplements · Cold Plunge · Workouts · Meditation
The problem
No app scores your circadian alignment — you have no idea how well your meals sync with your biology
You don’t track when you eat your first and last meal, so you can’t see how inconsistent your timing really is
Without data, you’ll never know if that late-night snack is the reason you feel wrecked every morning
OutLast gives you a real-time circadian alignment score based on your meal timing, eating window, and day-to-day consistency — so you can finally eat in sync with your body clock
How it works
One tap to log breakfast, lunch, and dinner. OutLast timestamps every meal and tracks your first and last bite of the day automatically.
OutLast calculates your circadian alignment in real time based on meal timing, eating window, and consistency. Score goes up when you eat in sync with daylight hours.
After a week, you’ll see exactly when your timing drifts. After a month, you’ll have the data to prove your metabolism is running on a better schedule.
What you get
A single number that tells you how well your meals align with your body clock. Based on real circadian science — not guesswork. Watch it improve as your timing gets consistent.
Track when you break your overnight fast each day. OutLast shows your first meal time trend so you can see consistency — or catch drift before it becomes a problem.
Log your final meal and OutLast calculates the gap before bedtime. Research shows 3+ hours is optimal. See exactly how close you're getting every day.
Your body clock thrives on regularity. OutLast tracks how consistent your meal timing is across days and rewards you for keeping a tight rhythm — even on weekends.
The science
What people say
“I had no idea how inconsistent my meal timing was until I started tracking with OutLast. My first meal ranged from 7 AM to noon depending on the day. After three weeks of watching my circadian score, I’ve locked in a 7:30 AM breakfast and my energy is completely different.”
“I was eating dinner at 9 PM most nights and wondering why I couldn’t sleep. OutLast showed me my last-meal-to-bed gap was under an hour. I moved dinner to 6 PM, my circadian score jumped, and I’m falling asleep faster than I have in years.”
“The circadian score is what hooked me. It’s like a credit score for your body clock. I check it every day and it genuinely motivates me to eat earlier and keep my window tight. My score has been above 90 for two straight weeks.”
Questions
Your body clock is already running. OutLast shows you whether your meals are working with it or against it — with a real-time circadian score built on actual science.
Free to use · No account required · The first circadian rhythm tracker app
Start tracking your circadian rhythmFree to use · No credit card · Takes 2 seconds