Circado: Fasting & Diet
Intermittent Timer & Sleep
Only for iPhone
Free · In‑App Purchases
iPhone
It's not about willpower — it's about timing. Track fasting, sleep, sunlight, and coffee. AI food logging. Energy balance with Apple Health.
Sync your eating, sleep, and workouts with your body's natural rhythm. Circado helps you build better eating habits by focusing on when you eat, not just what — no strict diets or calorie obsession required.
WHY TIMING MATTERS
Your body runs on an internal clock that affects hunger, energy, and metabolism. Eating at the right time can matter more than counting every calorie. Circado finds your optimal eating window based on your sleep patterns.
FEATURES
Fasting Timer
Track your eating window and see your progress through 6 metabolic stages — from Fed State to Fat Burning.
Energy Balance
See calories eaten vs burned each day. Breakdown of basal and active calories from Apple Health. Track your weight loss pace in kg per week.
Drink Tracking
Log water, coffee, tea, juice, smoothies, and more. Caffeine timing based on your cortisol rhythm. Track daily intake against the 400mg limit. Hydration progress bar shows how close you are to your daily water goal.
AI Food Recognition
Take a photo of your meal. AI recognizes the food and calculates calories, protein, carbs, and fats.
Sleep Score
Log your sleep and get a quality score (0-100) based on duration, depth, and awakenings. See how sleep affects your eating schedule.
Light Score
Track your daily sunlight exposure with a score from 0 to 100. Based on outdoor activity, morning light bonus, and cloud cover. See how light exposure correlates with your sleep quality.
Heart Rate Monitor
Connect any Bluetooth heart rate strap. See pulse zones in real time. All heart rate data saved to Apple Health.
Circadian Rhythm
Body temperature rhythm, weekly consistency score, eating window progress, and optimal coffee timing — all on one screen.
Widgets
Fasting timer and nutrition summary on your Home Screen and Lock Screen.
Points & Badges
Earn points for logging meals, sleep, and workouts. Build streaks and unlock badges for consistency.
Apple Health
Import workouts from Apple Watch, Polar, Garmin, and Strava. Sync weight and sleep. See your daily energy balance.
FOCUS ON WHEN, NOT JUST WHAT
Unlike calorie-counting apps, Circado connects your meals with sleep and activity. You see how your daily schedule affects your results — and what you can adjust.
Questions or feedback? support@circado.app
Terms of Service: https://circado.app/terms
Privacy Policy: https://circado.app/privacy
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Light Score
Daily sunlight exposure score (0-100) based on outdoor activity, morning light, and cloud cover. Tracks how light affects your sleep over time.
Hydration Progress
Water intake progress bar in the Nutrition card with daily status — from Dehydrated to Excellent.
Weather for Workouts
Outdoor workouts show weather conditions. Indoor vs outdoor detected automatically from Apple Health.
Auto-Recalculate Nutrition
Change meal weight and calories, protein, carbs, fats update automatically.
Promo Codes
Redeem offer codes directly in the app from Paywall or Settings.
Performance
Faster dashboard loading, fixed data sync after reinstall, reduced memory usage, and 20+ bug fixes.
The developer, Evgenii Doronin, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
- Health & Fitness
- Contact Info
- User Content
- Identifiers
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Location
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Evgenii Doronin
- Size
- 21.5 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 18.0 or later.
- iPhone
Requires iOS 18.0 or later.
- iPhone
- Languages
English and 4 more
- English, French, German, Russian, Spanish
- Age Rating
9+
- 9+
- Contains
Health or Wellness Topics
- In-App Purchases
Yes
- Annual Premium $69.99
- Monthly Premium $9.99
- Copyright
- © 2026 Evgenii Doronin
