health-fitness-tracking

Here’s a tightened version of your requirements, designed to stay comfortably under the 10,000-character limit while preserving the essential features and technical requirements. You can copy and send this directly to your software developer. Personal Health & Fitness Tracking Web App — Software Requirements 1. Project Overview Build a secure, private, browser-based personal health and fitness tracking web application. I will use it on my phone and laptop through a web browser. Important requirements: Personal use only; not a public application. Secure login with no public registration. Responsive interface for mobile browsers and laptops. No separate mobile app. Manual data entry; no wearable or device integrations. No voice logging or barcode scanning. Detailed daily, weekly, monthly, and custom-period reports. 2. Food & Nutrition Tracking Create a food diary that allows me to search for foods, enter quantities, and track nutritional intake. Features: Log foods and beverages with quantity (grams, ml, pieces, or servings), date/time, and meal category (breakfast, lunch, dinner, snacks). Calculate calories, protein, carbohydrates, fats, fibre, sugar, and other available nutritional values. Include a reliable food database, particularly Indian foods and common Indian meals. Distinguish raw and cooked food values where applicable. Allow custom foods, recipes, and meals. Calculate recipe nutrition based on ingredients and serving sizes. Save frequently consumed foods, meals, and recipes for quick logging. Allow entries to be edited, deleted, duplicated, or copied from previous days. Nutrition data should be reliable, and missing or estimated values should be identified rather than presented as exact. 3. Water & Beverage Tracking Log water quickly using configurable quantities. Track daily water intake against a personal target. Track other beverages separately while including their nutritional values in food totals where applicable. Display daily totals and weekly/monthly averages. 4. Exercise & Physical Activity Allow manual logging of: Gym and weight training. Walking, running, cycling, swimming, and sports. Other custom activities. Record relevant details such as date/time, duration, distance, steps, intensity, sets, repetitions, weights, and notes. Estimate calories burned using relevant personal and activity information. Clearly distinguish: Basal/resting energy expenditure. Exercise energy expenditure. Estimated total daily energy expenditure (TDEE). Avoid double-counting exercise calories when calculating total energy expenditure. 5. Calorie Balance & Nutrition Analysis Show: Total calories consumed. Protein, carbohydrates, fats, fibre, and other available nutrients. Estimated exercise expenditure. Estimated TDEE. Estimated daily calorie deficit or surplus. Progress against nutrition targets. Calculation: Estimated calorie balance = calorie intake − estimated TDEE. A negative result indicates an estimated deficit; a positive result indicates an estimated surplus. Clearly explain calculation methods and assumptions. Do not simply subtract exercise calories from food intake if exercise is already included in TDEE. 6. Sleep Tracking Allow manual entry of: Bedtime and wake-up time. Total sleep duration. Sleep quality. Optional notes. Correctly calculate sleep duration across midnight and display daily records, averages, and historical trends. 7. InBody & Body Composition Tracking I plan to undergo regular body composition assessments using InBody and manually enter the results from the InBody app. Create a dedicated section for recording each assessment as a separate, dated record. Support relevant measurements when available: Weight. Skeletal Muscle Mass (SMM). Body Fat Mass. Percent Body Fat (PBF). BMI. Total Body Water. Intracellular and Extracellular Water. Visceral Fat Level or Area. Basal Metabolic Rate (BMR). Segmental lean mass and fat analysis. Other metrics available in the report. Not every InBody device provides every metric, so only require fields that are available for that assessment. Essential features: Compare any two assessments. Show absolute and percentage changes where appropriate. Display historical graphs and trends for individual measurements. Allow notes about measurement conditions. Optionally attach the original InBody report. Preserve every historical assessment. The main goal is to understand changes in muscle mass, body fat, and overall body composition—not merely changes in weight or BMI. Account for the fact that hydration, recent exercise, and measurement conditions can affect results. Do not automatically classify every change as an improvement or decline. 8. Lifestyle & Habit Tracking Provide optional, configurable tracking for: Daily steps and walking duration. Meditation and stretching/mobility. Caffeine and alcohol intake, if applicable. Energy levels, mood, and stress. Sitting time and other personal habits. Allow me to enable or disable habits according to my preferences. 9. Dashboard Create a clear dashboard showing: Calories consumed. Protein, carbohydrates, fats, and fibre. Estimated exercise calories and TDEE. Estimated calorie deficit or surplus. Water intake. Steps and workouts. Sleep duration. Latest InBody measurements. Changes since the previous InBody assessment. Progress toward personal goals. Include a chronological daily activity timeline covering food, water, workouts, sleep, and other logged activities. Entries must be editable and deletable. 10. Reports & Analytics Generate daily, weekly, monthly, and custom-date-range reports. Include: Average calorie and protein intake. Macronutrient and fibre intake. Consistency with nutrition targets. Workout frequency and duration. Walking/running distance, steps, and estimated exercise calories. Weight, skeletal muscle mass, body fat mass, body fat percentage, and other available InBody trends. Sleep duration and quality. Water intake and lifestyle habit trends. Allow comparisons between different periods and visualize progress through charts and summaries. Where possible, show relationships between nutrition, activity, sleep, and body composition, but do not present correlations as proof of causation. 11. Goals & Targets Allow configurable goals for: Weight and body fat. Calories and macronutrients. Water intake. Daily steps. Weekly workouts. Sleep duration. Goals must be editable, and historical records must remain unchanged when targets are updated. Body composition progress should be assessed using the InBody history where relevant. 12. Fast Data Entry & Usability The application should minimize repetitive work through: Quick-add buttons. Searchable food and exercise databases. Saved foods, meals, recipes, and workout templates. Copying entries from previous days. Editable dates and timestamps. Easy editing and deletion. A searchable or filterable daily timeline. No voice logging, barcode scanning, wearable integration, or automatic device tracking is required. 13. Profile & Calculation Settings Maintain a personal profile containing relevant information such as age/date of birth, height, weight, activity level, goals, and nutrition targets. Allow profile updates without overwriting historical records or past InBody assessments. Document formulas, assumptions, and calculation methods. Where estimates depend on personal characteristics, use the relevant profile information. 14. Security, Data Management & Technical Requirements Secure authentication and private access. No public signup or unauthorized access. Secure storage of personal health data. Regular backups and a recovery mechanism. Export data to CSV or Excel. Preserve historical records and timestamps. Store food, exercise, sleep, and InBody records as structured data. Ensure reports update consistently when records are edited. Responsive, simple, fast interface suitable for daily use. The application may be hosted online, provided security and privacy are properly addressed. 15. Development Plan Phase 1 — Core tracking: Food, water, exercise, sleep, and InBody data entry. Phase 2 — Calculations: Calorie balance, nutritional targets, dashboard, historical records, comparisons, and charts. Phase 3 — Advanced features: Detailed reports, saved meals and recipes, workout templates, goals, data export, and backups. Phase 4 — Finalization: Testing, security checks, performance improvements, and interface refinement. 16. Before Development Begins Before writing code, please provide: Proposed technical architecture and hosting approach. Database structure and historical-data preservation strategy. Calculation methodology for nutrition, exercise expenditure, TDEE, and calorie balance. Initial UI wireframes for mobile and laptop browsers. Development milestones and testing plan. Security, backup, and data-export approach. Please review the requirements and clarify any technical limitations or assumptions before implementation. Wait for my approval of the architecture, wireframes, and calculation methodology before starting development. The final application should be a reliable personal health-tracking system that makes it easy to record daily habits and understand long-term changes in nutrition, fitness, sleep, and body composition.