MyAlyce - Smartwatch Health Monitoring Platform

MyAlyce is a comprehensive health data monitoring application built for the Amazfit Balance smartwatch running on Zepp OS. The platform serves as a supportive tool for individuals in addiction recovery by collecting vital health metrics and seamlessly integrating them with Google Drive for remote monitoring and support.

The Problem

Individuals recovering from substance abuse need continuous support and monitoring. Traditional check-ins can be infrequent, and early warning signs of distress may go unnoticed. MyAlyce bridges this gap by providing real-time health monitoring that can be shared with support networks, counselors, and healthcare providers.

The Solution

MyAlyce provides comprehensive health monitoring with cloud integration:

Real-Time Health Monitoring

Heart Rate Tracking: Continuous heart rate monitoring with resting and active measurements
Sleep Analysis: Comprehensive sleep tracking including total time, sleep stages (Deep, Light, REM, Wake), quality scores, and start/end times

Privacy-First Design

Granular user consent for each health metric
Permission settings persistently stored on device
Users control exactly what data is shared

Cloud Data Sync

Automated Google Drive folder creation
Daily Google Sheets generation for organized data storage
Periodic sync (configurable intervals) to minimize battery impact
Data headers automatically added to sheets

Support Network Integration

Share health data folders with trusted contacts via email
Role-based permissions (read-only access for contacts)
Easy contact management through settings interface
Remove access at any time

Emergency Alert System

Configure heart rate thresholds for alerts
Set up emergency contact phone numbers
Automatic notifications when thresholds are exceeded
Designed to provide rapid intervention in crisis situations

Tech Stack

Client (Smartwatch App)

Zepp OS - Native smartwatch platform for Amazfit Balance
JavaScript - Core application logic
@zeppos/zml - Zepp OS framework for UI and base services
@silver-zepp/easy-storage - Local data persistence and time-series database
Zeus CLI - Development and deployment tooling

Server

Node.js with Express - REST API backend
CORS middleware for cross-origin requests

Integrations

Google Drive API - Cloud storage for health data
Google Sheets API - Structured data logging with daily sheets
OAuth 2.0 - Secure authentication flow

Architecture Highlights

Client-Side Architecture

App Lifecycle Management: Initialization, heart rate monitoring startup, and database cleanup
Background Services: Continuous monitoring, Google Drive folder management, daily sheet creation, and periodic data sync
Google API Integration: OAuth 2.0 authentication, folder/sheet management, token refresh
Heart Rate Monitor: Real-time monitoring with rescue plan threshold alerts
Settings Interface: Tab-based navigation, Google authentication, email-based folder sharing, emergency contact configuration

Key Features

Offline-First: Local TSDB ensures data isn’t lost even without connectivity
State Management: Global storage accessible throughout the app
Modular Design: Separation of concerns between UI, services, and API layers
Error Handling: Comprehensive promise-based error handling
Notification System: Watch notifications for user feedback and alerts

Data Flow

Collection: Sensors on smartwatch continuously gather health metrics
Storage: Data stored locally in TSDB for reliability
Aggregation: Background service collects metrics at intervals
Authentication: OAuth tokens retrieved from settings storage
Sync: Metrics sent to Google Sheets via REST API
Sharing: Support network accesses shared Google Drive folder

Technical Challenges Solved

Battery Life Optimization

Configurable sync intervals (default: 1 minute data collection, periodic uploads)
Efficient use of background services
Local storage minimizes network calls

OAuth on Wearables

Companion app handles authentication flow
Settings sync between watch and phone
Token storage with expiration handling

Data Organization

Automatic daily sheet creation
Structured folder hierarchy in Google Drive
Headers automatically added to new sheets

Granular permission system
User explicitly enables each metric
Easy sharing management interface

What I Learned

This project taught me:

Wearable Development: Building apps for resource-constrained devices with unique UX challenges
OAuth Implementation: Handling complex authentication flows across multiple devices (watch, phone, web)
Cloud Integration: Working with Google Drive and Sheets APIs for automated data management
Health Data Privacy: Implementing granular permission systems for sensitive health information
Background Services: Managing long-running services on battery-powered devices
Time-Series Data: Efficiently storing and syncing time-series health data
Cross-Platform State Management: Keeping app state synchronized between watch and companion app

Impact

MyAlyce demonstrates how wearable technology can provide continuous, non-intrusive support for individuals in recovery. By automating health data collection and enabling secure sharing with support networks, it empowers users and their care teams with actionable insights while maintaining user privacy and control.

The platform bridges the gap between traditional check-ins and provides early warning systems through continuous monitoring, potentially enabling faster intervention during critical moments.