Fastiya vs Simple Calorie Tracker

Track every hour of your fast and get AI coaching built on your real data — not generic tips. Try Fastiya Pro free for 7 days. YOUR BODY, HOUR BY HOUR Watch your body shift from fat-burning to ketosis to autophagy in real time. Milestone alerts tell you exactly what's happening at 8h, 12h, 16h, and beyond — backed by science, not guesswork. AN AI COACH THAT ACTUALLY KNOWS YOU Ask questions and get answers built on your real fasting history, sleep, recovery, and stress data — not one-size-fits-all advice. Wake up to a Morning Report summarizing your sleep, recovery, and readiness before you even open the app. MACROS & NUTRITION, SIMPLIFIED Log meals and see your day at a glance: calories plus protein, carbs, and fat. Get smart feedback on your goals, hydration, and diet — no spreadsheets required. SLEEP, FASTING & STRESS, CONNECTED Journal Insights surfaces the correlations that matter — how your sleep affects your fasting, how stress shows up in your recovery — so you know what's actually moving your progress. SYNC YOUR WEARABLES Connect Fitbit, Oura Ring, or WHOOP for deeper recovery and readiness data layered directly into your coaching. KNOW YOUR BIOLOGICAL AGE See how your habits are shaping your biological aging clock, not just the calendar. STAY ON TRACK Streaks, achievements, and smart notifications keep you motivated without the noise — context-aware nudges, not constant pings. ON YOUR WRIST A dedicated Apple Watch app keeps your fast, streak, and body state visible without reaching for your phone. Try Fastiya Pro free for 7 days — full access to AI coaching, wearable sync, bio age, and advanced analytics. Cancel anytime. Terms of Use (EULA): https://fastiya.co/terms-of-service/ Privacy Policy: https://fastiya.co/privacy-policy/

Calvin is a simple calorie, macro, fitness, and health tracker that keeps the basics free. Track food, calories, macros, weight, workouts, steps, sleep, recovery, and health trends in one place — without ads or requiring an account. Barcode scanning and food search are free. Most calorie trackers moved them behind a subscription. Calvin does not. FREE, AND STAYING FREE • Barcode scanning for packaged foods • Food search with USDA Branded and Open Food Facts • Calorie, macro, protein, carb, fat, fiber, sugar, and sodium tracking • Fast manual logging, common foods, recents, usuals, one-tap repeat logging, and copy yesterday's log • Custom recipes • Weight tracking with a smoothed trend line and adaptive maintenance calories based on your real weight trend • Fitness tracking for workouts, steps, distance, and active time • Apple Health integration and automatic compatible smart-scale weigh-ins • Body fat and lean mass trends when available • Google Health connection • Sleep, HRV, resting heart rate, personal baselines, and a daily recovery score • Weekly and monthly recaps, plus year in review • Home Screen and Lock Screen widgets • Apple Watch app and complication • Siri, Shortcuts, and CSV export FAST FOOD LOGGING Start typing a food and Calvin surfaces foods you've logged before. One tap logs it again. The built-in pantry makes everyday staples like eggs, apples, rice, and chicken quick to add. CALORIES & MACROS, YOUR WAY Calories stay front and center while macros and nutrients are there when you want them. Choose which metrics appear throughout the app. Turn calorie numbers off for a simpler on-track-or-over view. FITNESS, WEIGHT & MAINTENANCE CALORIES Keep workouts and daily activity alongside nutrition. Track weight with a smoothed trend line, and let Calvin adapt your maintenance-calorie estimate over time based on your real weight trend. HEALTH & RECOVERY Bring together sleep, HRV, resting heart rate, breathing rate, activity, and other available health signals. Calvin compares supported metrics with your recent baseline. Your daily recovery score summarizes how you're doing and highlights the signals that changed. APPLE HEALTH & SMART SCALES Connect Apple Health to bring supported fitness and health data into Calvin. Compatible smart-scale weigh-ins can appear automatically, including body fat and lean mass when your scale provides them. Connections are optional. APPLE WATCH Check calories remaining, your chosen macros, and recovery from the Calvin Apple Watch app and complication. NO ACCOUNT NEEDED. NO ADS. Use Calvin without creating an account. Your food log lives on your device, not on a Calvin server. Connecting Apple or Google is optional and does not upload or restore your food log. WEEKLY, MONTHLY & YEARLY TRENDS See patterns across nutrition and health data with weekly and monthly recaps and a year in review. CALVIN PLUS — AI MEAL SCANNER Calvin Plus adds AI-powered meal photo scanning and deeper insights. Take a photo and Calvin identifies foods on your plate and estimates their nutrition. It can account for things a photo may miss, like cooking oil, and asks before keeping uncertain additions. Adjust portions, add a missing item, or make a correction without starting over. Monthly and annual plans are available in your local App Store currency with a 3-day free trial. Barcode scanning, food search, calorie and macro tracking, fitness, weight, health features, and the other core features above remain free. SIMPLE BY DESIGN Calvin helps you understand nutrition, fitness, weight, and health without turning every meal into homework. Track what matters. Ignore what doesn't. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://calvinhealth.com/privacy