✨ Available in 151 languages

Weight Loss Calorie Tracker with AI & Science

NEW: AI Body Preview generates a goal-physique visualization. Muscle Rating scores 8 muscle groups from a photo. Plus weight forecast, calorie tracking & AI food scan.

AI Body Preview Muscle Rating Weight Forecast कार्बन फुटप्रिंट ग्लूटेन पहचान

Recorded in the app — every screen shown in your language.

विशेषताएँ

See it in action

Swipe through app screenshots

Your Weight Loss Journey

Your Weight Loss Journey

Visualize your progress from start to target weight

Apple Health Integration

Apple Health Integration

Sync your fitness tracker. Visualize weight impact by workout intensity. No tracker? Our 'Add Activity' feature covers 45+ sports

Weight Forecast

Weight Forecast

See milestone dates, your daily plan — and whether you're on track for your summer body

AI Food Scanner

AI Food Scanner

Snap a photo and get instant calorie estimates

Exercise Log

Exercise Log

See calories burned and what they mean

Calorie Deficit

Calorie Deficit

See how far you are from goal—and the real reasons behind it

Reduce Your Carbon Footprint

Reduce Your Carbon Footprint

Track and reduce CO2 emissions from your food choices while losing weight

Visualize Fasting impact

Visualize Fasting impact

Visualize fasting windows—and their direct effect on your weight

विशेषताएँ

What makes LyteFast unique

Science-backed features for sustainable weight management

AI

AI Body Preview

See an AI-generated photo of your body at your goal weight

AI

Muscle Rating

AI scores your muscle groups from a photo and shows how you rank

BASE

Weight Forecast

Project your weight trend from recent data and goals with the Auto-Zoom chart.

BASE

Budget-Based Calories

Budget-based calorie tracking - simple 'spend vs. budget' approach

AI

AI Food Scanner

Snap a photo, get instant calorie estimates with 50 scans per day.

AI

Food Barcode Scanner

Scan barcodes for precise instant calorie estimates and gluten status

BASE

Visualize Fasting impact

Visualize fasting windows—and their direct effect on your weight

BASE

Calorie Deficit

See daily deficit/surplus against your target with visual charts.

BASE

कार्बन फुटप्रिंट

Track the environmental impact (CO₂e) of your food choices

BASE

ग्लूटेन पहचान

Gluten indicators based on barcode scanning and meal analysis

FREE

Exercise Log

Sync your fitness tracker. Visualize weight impact by workout intensity. No tracker? Our 'Add Activity' feature covers 45+ sports

FREE

Share

Animated %-to-goal gauge + exclusive Auto-Zoom weight chart with prediction—see progress and when milestones hit.

Science-Backed

Research Supporting LyteFast

Peer-reviewed references supporting weight forecasting, energy balance, carbon footprint of diets, gluten detection, nutrition databases, and AI food analysis.

Weight Forecast

Weight forecasting employs predictive models grounded in energy balance principles to estimate future weight trends based on recent data. Studies indicate that self-monitoring of weight and calorie intake, along with trend smoothing to minimize daily fluctuations, aids individuals in comprehending their trajectory and making timely adjustments. Short-horizon predictive modeling transforms your recent trajectory into actionable forecasts that facilitate adherence and promote long-term habits.

Budget-Based Calories

Pre-set calorie budgets with clear "within budget" or "over budget" feedback assist users in making informed food choices in real-time. Research indicates that this decision-support approach enhances adherence to calorie goals by minimizing cognitive load and offering immediate, actionable feedback. The straightforward "spend vs. budget" framework aligns with principles of behavioral economics, which suggest that individuals make better decisions when they have clear constraints and receive instant feedback on their choices.

Calorie Deficit & Energy Balance

Energy balance—the relationship between calories consumed and calories burned—is the primary factor influencing weight change. Research consistently demonstrates that establishing a calorie deficit results in weight loss, whereas a calorie surplus contributes to weight gain. Visualizing this deficit in real-time aids users in comprehending how their daily choices affect their progress towards their goals. The app simplifies the concept of energy balance, illustrating the difference between current intake and target, as well as the adjustments needed to bridge that gap.

AI Food Scanner

Artificial intelligence and machine learning facilitate automated food recognition through photos, text descriptions, and barcode scanning. Research indicates that AI-driven nutrition estimation can achieve reasonable accuracy for common foods, assisting users in logging meals more swiftly and consistently. The integration of photo analysis, barcode scanning, and text parsing offers various methods for food logging, thereby lowering obstacles to self-monitoring and enhancing adherence to calorie tracking.

Carbon Footprint

Food production contributes significantly to global greenhouse gas emissions. Research indicates that various foods have markedly different carbon footprints, and dietary choices can greatly influence environmental sustainability. Monitoring the carbon footprint of meals aids users in comprehending the environmental implications of their food selections and facilitates more sustainable decision-making. Studies show that even minor dietary adjustments can lead to a meaningful reduction in carbon emissions.

Gluten Detection

For individuals with celiac disease or gluten sensitivity, it is crucial to avoid gluten for maintaining health. Research indicates that even minimal exposure to gluten can trigger symptoms and lead to long-term damage in sensitive individuals. Barcode scanning and food analysis can assist in identifying products that contain gluten, offering a rapid screening tool to aid in adherence to a gluten-free diet. While the app offers indicators based on product information, it is important to understand that it serves as an estimator and should not replace thorough label reading or professional medical advice.

Unlock Premium Access

Track your weight with budget-based calorie control and motivating charts

FREE

  • Your Weight Loss Journey
  • Exercise Log
  • Apple Health Integration
  • Share

Base Access

  • Weight Forecast
  • Calorie Deficit
  • Visualize Fasting impact
  • कार्बन फुटप्रिंट
  • ग्लूटेन पहचान

Unlock AI Features

  • AI Food Scanner
  • Food Barcode Scanner
  • AI Body Preview
  • Muscle Rating

Ready to start your journey?

Download LyteFast today and get your 3-day free trial.

Download on App Store

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