Gym Training Application: Kotlin Android with Adaptive Workout Planning

Intelligent Workout Management System

Kotlin Android application providing personalized training programs, exercise form guidance, and adaptive scheduling based on user progress and historical performance data.

---

Technical Architecture

Mobile Application

• Native Kotlin development with Android SDK and Material Design components
• SQLite database with Room persistence library for local data storage
• RecyclerView with custom adapters for exercise lists and training history
• Foreground services for workout timer with ongoing notifications

Media & UI Components

• Embedded video player for exercise demonstration videos
• Custom circular progress indicators for timer and set tracking
• Gesture detection for swipe-based navigation between exercises
• Dark/light theme support with dynamic color theming

---

Core Technical Features

Workout Tracking System

• Exercise database with pre-loaded workout routines and custom exercise creation
• Set/rep tracking with weight progression history charts
• Rest timer with configurable intervals between sets
• Workout completion statistics with personal records tracking

Intelligent Scheduling

• Adaptive workout planning based on previous session performance
• Muscle group rotation algorithms to prevent overtraining
• Recovery time calculation based on exercise intensity and volume
• Automatic next workout suggestion with progressive overload principles

Exercise Library

• Categorized exercise database with search and filtering capabilities
• Embedded video demonstrations for proper form guidance
• Exercise details with target muscle groups and difficulty ratings
• Favorite exercises system for quick access to frequently used movements

Progress Analytics

• Weight progression charts with trend line analysis
• Volume calculation for intensity tracking
• Personal records highlighting with achievement notifications
• Training frequency statistics and consistency metrics

---

Technical Specifications

Platform: Android SDK, Kotlin, SQLite, Room Database, Material Design

Key Algorithms:

• Workout scheduling using historical performance data and recovery algorithms
• Progressive overload calculation based on user progress trends
• Muscle group frequency optimization to ensure balanced development
• Personal record detection through time-series data analysis

Database Schema:

• Exercises table with muscle group mapping and metadata
• Workout sessions table with timestamp and completion status
• Exercise records table with weight, reps, and volume tracking
• User preferences table for custom settings and favorites

Performance Optimizations:

• Efficient RecyclerView implementations with view holder pattern
• Background thread database operations using Coroutines
• Bitmap compression and caching for exercise images
• Battery optimization through foreground service best practices