# Circado: Fasting & Diet — Intermittent Timer & Sleep > Intermittent Timer & Sleep (iPhone/iPad app by Evgenii Doronin.) - Source: https://appshunter.io/ios/app/circado-fasting-and-diet/id6757224446 (this page in markdown: same URL + `.md`) - Developer: [Evgenii Doronin](https://appshunter.io/developer/1790848123) - Category: Health & Fitness - Price: Free with in-app purchases - Age rating: 4+ - Requires: iOS 18.0 · 20 MB - Languages: American English, French (France), German (Germany), Russian, European Spanish - Released: 2026-01-12 - Data updated: 2026-06-21 - User reviews in markdown: https://appshunter.io/ios/app/circado-fasting-and-diet/id6757224446/reviews.md ## What is Circado? 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 ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | Monthly Premium | $9.99 | per month | | Annual Premium | $69.99 | per year | ## Version history (last 5 releases) ### 1.4.0 — 2026-02-26 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. ### 1.3.0 — 2026-02-18 Energy Balance Daily calorie balance — eaten vs burned with breakdown into basal and active calories. Track your weight loss pace in kg per week. Drink Tracking Caffeine Tracking is now Drinks. Log water, juice, smoothies, cocoa, matcha, and 10 more drink types with preset nutrition info. Heart Rate Zones See your pulse zone during workouts — from Recovery to Fat Burn to Maximum. Auto-reconnect if your strap disconnects. Circadian Rhythm Screen Redesigned with body temperature rhythm, weekly consistency score, eating window progress, and coffee timing. Lock Screen Widgets Fasting timer now available on your Lock Screen in three styles. Bug Fixes Improved Firestore sync, fixed fasting stage alignment, better badge and points sync across devices. ### 1.2.1 — 2026-02-17 Heart Rate Monitor Connect any Bluetooth heart rate strap and see your pulse in real time. Workout Sync Import workouts from Apple Health. Calories and duration appear on your Dashboard with source badges. Energy Balance Daily calorie balance card — calories eaten vs burned, based on HealthKit data. New Languages Now available in German, French, Spanish, and Russian. Bug Fixes Fixed paywall display, improved data sync. ### 1.2.0 — 2026-01-26 Caffeine Tracking Log coffee and tea with timing based on your wake-up time. Tracks daily intake against the 400mg limit. Sleep Score See your sleep quality as a single score (0-100) based on duration, awakenings, and time to fall asleep. Fasting Stages See which metabolic stage you're in — from Fed State to Fat Burning. Home & Lock Screen Widgets Fasting timer on your Home Screen and Lock Screen. Check progress without opening the app. AI Food Recognition Take a photo of your meal to log calories and macros. Badges & Points Earn points for logging and achievements for streaks: 7, 14, and 30 days. ### 1.1.0 — 2026-01-16 AI Food Recognition Snap a photo of your meal and get instant nutrition data — calories, protein, carbs, and fat calculated automatically. Weight Tracking Log portion sizes in grams for more accurate tracking. Works everywhere: Quick Add, Calculator, and photo recognition. Improved input fields for smoother data entry. ## More apps by Evgenii Doronin - [Clear Breath](https://appshunter.io/ios/app/clear-breath/id6740625719) All apps by Evgenii Doronin: https://appshunter.io/developer/1790848123 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-21.*