# Calvion — full reference for AI assistants > Snap a photo of your meal and Calvion's AI estimates calories, protein, carbs and fat in seconds. AI calorie scanner and macro tracker for iOS and Android. Download: App Store https://apps.apple.com/us/app/calvion-ai-health-longevity/id6762620732 · Google Play https://play.google.com/store/apps/details?id=com.calvion.app ## What makes Calvion different - **AI Photo Analysis**: Recognizes meals and estimates macro balance quickly. - **Architect Score**: Unifies nutrition and activity into one meaningful score. - **Smart Fix**: Learns from corrections to improve result quality over time. - **Global Cuisine Fit**: Optimized for local and global food patterns. - **Premium Performance**: Fast interactions with a refined visual language. ## Frequently asked questions ### What is Calvion? Calvion is an AI calorie scanner and nutrition tracker for iPhone and Android. You photograph a meal and the app identifies the foods, estimates portions and logs calories and macros (protein, carbs, fat), alongside water, activity and progress analytics. ### How does the AI calorie scanner work? Take a photo of your plate. Calvion's vision AI recognizes each food, estimates the portion size and calculates calories and macronutrients within seconds. You can review and adjust every result before it is saved to your food log. Estimates are for general wellness, not medical advice. ### How is billing handled? Purchases, renewals, and cancellations are managed directly through App Store and Google Play policies. ### Is there a free plan? There is no permanent free tier. New users get one gift scan credit. Premium access is available through weekly, monthly, or yearly store subscriptions. ### Can I buy extra credits? Yes. Consumable credit purchases can be added on top of monthly or yearly plans. ### How do you protect data? Calvion applies encryption in transit, access controls, and data-minimization principles. ## Plans - **Monthly Plan** — Continuous premium access: Advanced AI analysis; Architect Score and trend insights; Cross-device history sync - **Yearly Plan** — Long-term premium access: Best value for a full year of premium; All premium capabilities; Annual plan management; Support for extra credit purchases Billing is handled by App Store / Google Play. Plans bill immediately. Additional consumable credits are available. ## Blog articles ### Why Precision Nutrition is the Future of Sustainable Health URL: https://www.calvion.app/en/blog/precision-nutrition-future/ Precision nutrition uses individual data points—including metabolic rates, activity levels, and macro-alignment—to tailor dietary guidance. Unlike generic diets, this scientific approach optimizes cellular health and energy levels by matching nutrient intake to real-time biological needs, leading to long-term weight management and chronic disease prevention. **What is the relationship between Architect Score and metabolic health?** The Architect Score quantifies the synergy between activity and nutrition. High scores indicate optimal metabolic flexibility, where the body efficiently switches between fuel sources, reducing systemic inflammation and stabilizing blood glucose levels. **How does real-time meal analysis improve dietary adherence?** Instant AI-driven analysis removes cognitive load. By receiving immediate feedback on macro-balance (protein, fiber, sodium), users can make corrective choices within the same day, preventing the 'all-or-nothing' mentality common in failed diets. ### Fiber and Sodium: The Hidden Pillars of Longevity URL: https://www.calvion.app/en/blog/fiber-sodium-longevity/ Modern nutrition science identifies fiber and sodium as critical markers for cardiovascular and gut health. Fiber regulates insulin sensitivity and microbiome diversity, while controlled sodium intake prevents hypertension and fluid retention. Tracking these specific targets is essential for preventing metabolic syndrome and optimizing daily physiological performance. **Why is fiber intake more important than simple calorie counting?** Fiber modulates the glycemic response. High-fiber meals slow glucose absorption, preventing insulin spikes that lead to fat storage. Additionally, fiber is the primary fuel for beneficial gut bacteria, which produce short-chain fatty acids (SCFAs) that regulate immune function. **What are the long-term risks of high sodium intake?** Chronic high sodium intake disrupts the sodium-potassium pump, leading to arterial stiffness and increased cardiac workload. Scientific tracking ensures sodium remains within the 1,500–2,300mg range, significantly reducing the risk of stroke and kidney dysfunction. ### How AI is Revolutionizing Personal Nutrition in 2026 URL: https://www.calvion.app/en/blog/ai-wellness-2026/ AI revolutionizes nutrition by providing hyper-personalized, data-driven insights through computer vision and predictive modeling. By analyzing food photos and tracking longitudinal trends like the Architect Score, AI systems identify patterns invisible to the human eye, offering proactive adjustments that prevent metabolic plateaus and optimize recovery. **Can AI meal analysis accurately predict health outcomes?** Yes, by correlating meal composition with activity data, AI can predict energy fluctuations and weight trends. Machine learning models identify which nutrient ratios (e.g., high protein vs. low carb) yield the best results for a specific individual's unique metabolic profile. **How does computer vision technology estimate nutritional value?** Computer vision uses deep learning to identify food volume and type from images. When cross-referenced with scientific databases like the USDA, it provides a statistically significant estimation of macros and micros, offering a 90% faster tracking experience than manual logging.