Gym & Diet Recommend AI App (Android)

Project Objective

Deliver a user-friendly fitness diet plan app that tailors meal and workout recommendations to each user. The app reduces confusion by converting fitness goals into structured plans and supports adherence with reminders, progress logs, and video guidance.

How It Works

1. Profile & BMI: User enters height, weight, age, gender → BMI & BMR calculated.
2. Goal & Preferences: Choose weight gain/loss/maintenance and veg/non-veg; select activity level.
3. Plan Generation: App builds day-wise meal plan (breakfast/lunch/dinner/snacks) and workout split (e.g., push/pull/legs or full-body).
4. AI Chatbot: Ask questions like “high-protein veg breakfast?” or “beginner leg-day routine”.
5. Videos: Recipe and exercise demos with tips for form and safety.
6. Sync & Track: Plans, history, and preferences sync with Firebase; reminders keep you on schedule.

Project Modules

Android Integration Sketch (Java/XML)

// PSEUDO-CODE (illustrative only; no Firebase JSON)

// BMI & BMR
class HealthMath {
  static double bmi(double kg, double cm){
    double m = cm/100.0;
    return kg/(m*m);
  }
  static double bmr(double kg, double cm, int age, String gender){
    // Mifflin-St Jeor approximation
    if("male".equals(gender)) return 10*kg + 6.25*cm - 5*age + 5;
    return 10*kg + 6.25*cm - 5*age - 161;
  }
}

// Plan Engine
class PlanEngine {
  Plan generate(UserProfile p){
    // 1) Compute TDEE from BMR * activity multiplier
    // 2) Adjust calories based on goal (+/-)
    // 3) Macro split (e.g., protein 1.6-2.2 g/kg, fats 20-30%, rest carbs)
    // 4) Build meals per day using templates (veg/non-veg)
    // 5) Select workout split based on experience and schedule
    return plan;
  }
}

// AI Chatbot Hook
class AiAssistant {
  LiveData ask(String prompt, UserContext ctx){
    // sanitize -> call generative endpoint with domain prompt
    // return concise, actionable reply with disclaimers when needed
  }
}

// Videos
void openVideo(String ytId){
  startActivity(new Intent(Intent.ACTION_VIEW,
    Uri.parse("https://www.youtube.com/watch?v=" + ytId)));
}

// Reminders
void scheduleReminder(LocalDateTime when, String text){
  // WorkManager/AlarmManager to fire local notification
}
              

What You Get