DAY 1 - AI Fitness

Your AI-powered fitness system — smart training plans, real-time coaching, photo-based diet analysis, cycle tracking, and Apple Watch integration.

DAY 1 — Your AI-Powered Fitness Coach

Combining Apple HealthKit data with AI-powered analysis, DAY 1 creates personalised training plans tailored to you. Your sensitive health data stays on your device. Cloud-synced data is fully encrypted — your privacy, your control.

Terms of Use: https://wei666-china.github.io/day1-app/terms.html Privacy Policy: https://wei666-china.github.io/day1-app/privacy.html

SMART TRAINING PLANS AI automatically adjusts daily training intensity and content based on your body data and recovery status.

RECOVERY ASSESSMENT Green / Yellow / Red light system — using heart rate, HRV, sleep quality and more to scientifically determine your training readiness.

AI CHAT COACH Ask your AI coach anytime for personalised training and nutrition advice based on your health data. Multiple AI providers supported.

DEEP HEALTHKIT INTEGRATION Reads heart rate, HRV, sleep, body temperature, steps and more. Writes workout records back to the Health app.

NUTRITION TRACKING Track daily meals with nutrition advice tailored to your training goals.

CYCLE-AWARE TRAINING Female users can optionally enable menstrual cycle management for cycle-adapted training adjustments.

Privacy Promise:

• Sensitive health data stays on your device
• Cloud-synced data encrypted in transit and at rest
• No ads, no tracking
• AI conversations use de-identified summaries only