Cross-Platform Fitness Tracker App

I need a polished mobile application that works seamlessly on both iOS and Android. The core of the build is a dual-tracker: one side lets users record detailed workouts, the other keeps daily calories and macros in check... (Budget: ₹75000 - ₹150000 INR, Jobs: Android, Data Visualization, Flutter, iOS, iPad, iPhone, Mobile App Development, React Native)