What I offer includes complete Flutter fitness and health app development for iOS and Android, workout tracking with exercise library and custom workout builder, nutrition logging and calorie tracking with meal plans, real time progress monitoring with charts and statistics, BMI and body measurement tracking, step counter and activity tracking with device sensors, push notification reminders for workouts and hydration, gym management features including membership management, class scheduling, and trainer profiles, video workout integration for guided exercise sessions, Apple Health and Google Fit integration, user authentication and profile management, subscription billing with Apple In-App Purchase and Google Play Billing, admin dashboard for content and user management, and full App Store and Google Play Store submission.