Android Health Tracker App

I am putting together a full-featured wellness application for Android that mirrors the experience of HealthifyMe, but focused on my own brand and feature set. The core of the build revolves around live tracking linked to three pillars: calorie tracking, detailed exercise logging, and personalised diet plans.

In addition to these coaching tools, I want users to feel connected, so the app must ship with social functionality—specifically the ability for friends to add one another, exchange messages in-app, and follow each other’s progress in real time.

Because we are launching on Android only, the interface should follow modern Material Design guidelines, remain lightweight, and perform smoothly on mid-range devices. A secure backend (Firebase, Supabase, or a custom REST setup—whichever you are most comfortable with) will need to handle user authentication, data sync, and the real-time updates that power live tracking and messaging. Push notifications for reminders, milestones, and friend interactions are essential.

Key deliverables:
• High-fidelity UI/UX designs and final Android Studio project
• Fully tested APK with calorie, exercise, and diet modules working end-to-end
• Social layer (add friends, chat, progress feed) with live update capability
• Scalable backend with documented API endpoints and basic admin access
• Source code, build instructions, and a short hand-off walkthrough

Acceptance criteria: each listed module must store data locally when offline, sync seamlessly when a connection returns, and maintain <1 s latency on messaging under typical loads. If this aligns with your expertise in Kotlin/Java, real-time databases, and fitness-oriented UX, I’m ready to review your approach and timeline.