1. A Fresh Visual Identity - Modern color upgrade: The app's theme has been refreshed with deep Indigo & Purple tones, delivering a more premium, immersive nighttime guardian experience. - Full Dark Mode and Light Mode support — the interface looks stunning in any environment. - More natural time display: Optimized time formatting throughout the app for clearer, more intuitive readability. 2. Smarter Sleep Analysis - New sleep data source selector: Choose which device's sleep data to analyze for more precise results. - New weekly view: See your sleep quality trends at a glance and easily spot patterns in your routine. - AI sleep insights fully upgraded — faster generation with more personalized recommendations. 3. Data Accuracy & Privacy - Fixed display logic for sleep records and physiological metrics, ensuring more consistent and reliable feedback for SpO2, sleep duration, and other key data. - Enhanced privacy protection: The underlying logging system has been fully upgraded with privacy redaction to safeguard your sensitive health data more rigorously. 4. Lighter & Faster - Major performance optimization: Removed thousands of lines of redundant code for a smaller footprint and faster launch. - Resolved dashboard stuttering and redundant refresh issues in certain scenarios. - Fixed weekly chart display, subscription lock state, and other known issues.

1. Fixed subscription bugs 2. Updated the UI style of some pages

NightGuard 3.0.0 - Cloud AI & New Sync Engine This major update brings professional AI insights and a completely rebuilt data core for ultimate performance. MAJOR FEATURES - Cloud AI Analysis: Connect to our advanced cloud engine for deeper, personalized sleep insights. - All-New Sync Engine: We rebuilt our data layer from the ground up using Anchor-based syncing. Experience significantly faster loading, improved reliability, and lower battery usage. - Weekly AI Summary: New weekly trends looking at your long-term sleep health. IMPROVEMENTS - Enhanced Startup: A smoother, polished launch experience with better progress feedback. - Background Reliability: Fixed background processing issues to ensure your data stays up-to-date. - Visual Polish: Refined UI for reports and calendar views.

Version 2.2 - Smarter Insights, Silky Smooth In this update, we focused on refining every detail to make NightGuard not just smarter, but faster and more responsive to your life. [ Insights That Understand You ] AI is now more human-aware: Beyond Just Scores: NightGuard can now detect "Social Jet Lag", "Sleep Debt", and "Travel Jet Lag". Receive tailored advice whether you're recovering from a weekend party or a long flight. Score Transparency: Added a "Data Confidence" indicator. Instantly see the data quality behind every sleep score—trust every number. [ Faster & Smoother ] We've rebuilt the app's core engine: Instant Response: The Sleep Dashboard has been re-engineered for speed. Scrolling through history and loading daily data feels smoother than ever. Seamless Sync: Data syncs across your devices faster and more reliably. [ Refinements ] Fixed various minor issues to improve overall stability and user experience.

1.Updated local AI weights 2.Optimized homepage UI 3.Fixed known CloudKit issues 4.Fixed several known issues

NightGuard Version Update Notes What's New in This Update Comprehensive Help Guide Complete help guide to better understand NightGuard: - Core Metrics: Detailed explanations of sleep scores, HRV, SpO2, sleep stages, and more - Smart Intervention: Introduction to Sleep Assist Mode, setup, and Strict Mode tips - AI Analysis: How AI analyzes your sleep patterns and provides predictions - Privacy & Technology: Privacy protection and local processing details Sleep Quality Rating Submit your own ratings for each sleep session: - Submit 1-5 star ratings from the sleep detail page - Ratings train personalized AI models for better analysis - View submitted rating status - Pro users get AI model online training Data Recovery New data recovery in onboarding: - Auto-detects cloud backup on first use - Restore sleep configurations and habits from iCloud - Easier data migration when switching devices AI Insights Upgrade Enhanced sleep analysis: - Deep Sleep & REM Analysis: Dedicated analysis for sleep stages - Personalized Recommendations: Custom advice based on age, gender, and more - Enhanced Metrics: Detailed heart rate, HRV, SpO2 interpretations - Stress Insights: Identifies stress impact and improvement suggestions - Educational Content: Sleep science knowledge in insights Sleep Dashboard Improved data visualization: - 6-Month View: Long-term trend observation - Month Selector: Quick access to historical data - Chart Interactions: Tap data points for details - Visual Effects: Gradient backgrounds and optimized week view Personalized Sleep Configuration Science-based personalized targets: - Calculate targets from age, gender, BMI, and demographics - Infer chronotype (early bird, night owl, etc.) - Dynamic adjustment of sleep duration and quality standards Sleep Habits - Settings entry in habit cards - Unified blue theme for icons - Simplified interface Visual Effects - Starry Sky: Natural star distribution and smooth animations - Weather Service: Improved gradient colors - Sleep Countdown: Always shows sunrise/sunset info Subscription Features - Historical Data: Pro users access complete history - AI Training: Pro users get online model training - Free Limits: Appropriate prompts for free users Anomaly Detection - Auto-detects abnormal sleep data - Data completion feature - Optimized editing interface Accessibility - Enhanced accessibility support - Haptic feedback - Optimized interface elements Other Improvements - Optimized sleep calculations (valid data only) - Improved data loading and caching - Enhanced auto-refresh for data completeness - Updated privacy policy descriptions Thank you for using NightGuard! We'll continue improving your sleep experience.