AI Food Scanner
Take a photo of your meal and our AI identifies the food, estimates portion size, and calculates calories and macros instantly.
Manual Food Logging
Search our database or enter custom foods. Log snacks, drinks, and meals with detailed nutritional information.
Macro Tracking
Track proteins, carbs, and fats alongside calories. See your macro split visualized in beautiful charts.
Personalized Calorie Goals
Get calorie targets based on your TDEE, goal (lose/maintain/gain), and activity level. Fully customizable.
Progress Tracking
View daily, weekly, and monthly calorie trends. See how your eating patterns change over time.
Fasting Integration
Calorie tracking syncs with your fasting schedule. See exactly what you eat during your eating window.
How the AI Food Scanner Works
FastFlow AI uses Google Gemini AI to analyze food photos. The AI identifies individual food items, estimates portion sizes, and calculates calories and macronutrients (protein, carbs, fat) for each item.
Snap a Photo
Take a picture of your meal, snack, or drink. The AI works best with clear, well-lit photos.
AI Analyzes
Google Gemini identifies all food items and provides up to 3 guesses for each item with calorie estimates.
Review & Log
Select the correct identification, adjust portion size if needed, and the calories are logged instantly.
You can also try the AI food scanner right here on our website: Online Calorie Calculator with AI Scanner
Why Track Calories During Intermittent Fasting?
Intermittent fasting controls when you eat, but what and how much you eat still matters for weight loss. Studies show that people who track calories lose 2-3x more weight than those who don't.
Common mistakes during intermittent fasting include overeating during the eating window, not getting enough protein, and consuming too many liquid calories. A calorie tracker helps you avoid these pitfalls. Read our complete guide: Intermittent Fasting Diet: What to Eat & Avoid
How Many Calories Should You Eat?
Your calorie needs depend on your TDEE (Total Daily Energy Expenditure). For weight loss, aim for a 300-500 calorie deficit. For maintenance, eat at your TDEE. For muscle gain, add 200-300 calories.
| Goal | Calorie Target | Expected Result |
|---|---|---|
| Aggressive Loss | TDEE - 500-750 | ~0.5-0.75 kg/week |
| Moderate Loss | TDEE - 300-500 | ~0.3-0.5 kg/week |
| Maintenance | TDEE | Stable weight |
| Lean Gain | TDEE + 200-300 | ~0.2-0.3 kg/week |
AI Food Scanner vs Manual Food Diary
AI Food Scanner
- • Log meals in under 5 seconds
- • Works with home-cooked meals
- • Identifies multiple items at once
- • No database searching required
- • Estimates portion sizes visually
- • Powered by Google Gemini AI
Traditional Food Diary
- • Requires manual text search
- • Best for packaged foods
- • One item at a time
- • Need to know exact food name
- • Manual portion size selection
- • Relies on food database accuracy
FastFlow AI supports both methods — use the AI scanner for quick logging and manual entry for precise control. Free users get 2 AI scans per day; premium users get unlimited scans.
All-in-One Health Tracking
FastFlow AI isn't just a calorie tracker — it combines everything you need for successful intermittent fasting and weight management:
- • Intermittent fasting timer with 5 fasting protocols
- • AI fasting coach for personalized advice
- • Water tracker with smart hydration reminders
- • Weight tracking with BMI calculation
- • Daily health score combining all your health data
- • Streak system with joker protection
Learn more about optimizing your diet for fasting: 10 Intermittent Fasting Weight Loss Tips That Actually Work
Frequently Asked Questions
Is the calorie tracker free?
Yes! Calorie tracking and manual food logging are completely free. The AI food scanner is free for 2 scans per day; premium users get unlimited scans.
How accurate is the AI food scanner?
The AI scanner provides estimates within 10-20% accuracy for most common foods. It works best with clear photos and standard portion sizes. You can always adjust the estimates manually.
Can it scan home-cooked meals?
Yes! The AI is trained to identify both packaged and home-cooked foods. For complex dishes, it breaks down visible ingredients and estimates each one separately.
Does it track macros (protein, carbs, fat)?
Yes. Every food entry includes calorie count plus protein, carbohydrates, and fat breakdown. Premium users get detailed macro analytics.
Can I set a custom calorie goal?
Yes. FastFlow AI suggests a calorie goal based on your TDEE and weight goal, but you can set any custom target you prefer.
Does calorie tracking work with fasting?
Absolutely. FastFlow AI syncs your calorie tracker with your fasting schedule, so you can see exactly what you eat during your eating window.