--- title: "NightGuard: Sleep & Habits - Reviews, Revenue and Downloads in Barbados | Apple App Store" description: "NightGuard is a professional AI-powered sleep health app that helps you deeply understand your sleep and scientifically improve your rest. By integrating Apple HealthKit and WeatherKit with on-device " --- # NightGuard: Sleep & Habits — Barbados > Smart Sleep & Habit Tracker ![NightGuard App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/a3/fa/23/a3fa23c1-880f-297b-b932-69faafe6b74b/AppIcon-0-0-1x_U007ephone-0-1-85-220.png/434x0w.png) **Developer:** [符垚 秦](https://apptail.io/developer/developer-HnLEeb) **Category:** Health Fitness **Rating:** N/A (0 ratings) **Price:** Free **Bundle ID:** com.vectrakode.nightguard **Store:** Apple App Store **Country:** Barbados **Version:** V3.1.0 (released 2026-02-09) **Original Release:** 2025-11-18 **Languages:** English, Chinese **App Store Link:** [Download on Apple App Store](https://apps.apple.com/bb/app/app/id6754812386) **AppTail Page:** [https://apptail.io/app/nightguard-sleep-habits-IYux/barbados](https://apptail.io/app/nightguard-sleep-habits-IYux/barbados) ## NightGuard Description NightGuard is a professional AI-powered sleep health app that helps you deeply understand your sleep and scientifically improve your rest. By integrating Apple HealthKit and WeatherKit with on-device deep learning models, NightGuard delivers clinical-grade sleep analysis and personalized improvement plans. Key Features: • Hybrid AI Sleep Scoring: Combines a CoreML Transformer deep learning model with a lightweight neural network to generate precise sleep quality scores (0-100) across multiple dimensions including sleep stages, duration, and efficiency — all processed entirely on your device • Comprehensive Health Tracking: DeepHealthKit integration for full physiological monitoring including heart rate, heart rate variability (HRV), blood oxygen saturation (SpO2), respiratory rate, and body temperature • Smart Data Source Management: Choose which device's sleep data to analyze, ensuring your scores are based on the most accurate source • Multi-Range Trend Analysis: Day, week, month, 6-month, and yearly views to visualize sleep patterns and long-term trends at a glance • Environmental Impact Analysis: WeatherKit integration to quantify how temperature, humidity, and other environmental factors affect your sleep • AI Personalized Insights: Dynamically adjusts scoring standards based on your age, gender, and historical data, delivering actionable sleep improvement recommendations • Privacy-First Design: All AI inference runs locally on your device — your health data never leaves it. Secure iCloud (CloudKit) sync keeps your data consistent across all your devices NightGuard — Your personal sleep scientist, guarding every night with AI. ## NightGuard Screenshots - [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/66/99/1f/66991fc1-5af4-9c29-2618-231a3c2c6a0c/Frame_06.png/1284x2778.png) - [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/48/31/b5/4831b55b-797b-7ed8-54a0-aa3cc2511d5e/Frame_07.png/1284x2778.png) - [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/43/da/50/43da50a2-7029-8b28-ae30-2c53d81e84c9/Frame_08.png/1284x2778.png) - [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/76/23/f7/7623f7fc-a6f4-0430-c660-79aefc61bf3f/Frame_09.png/1284x2778.png) - [Screenshot 5](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/9b/bf/3c/9bbf3c65-0b23-1cdf-d732-3b708df6c13e/Frame_10.png/1284x2778.png) ## NightGuard In-App Purchases | Item | Price | |------|-------| | AI Enhanced Annual Subscription | USD 34.99 | | AI Enhanced Quarterly Subscription | USD 11.99 | | Monthly Subscription | USD 5.99 | ## Apps Similar to NightGuard - [Open Food Facts - scan produit](https://apptail.io/app/open-food-facts-scan-produit-icd/barbados) - [Sleepzy - Sleep Cycle Tracker](https://apptail.io/app/sleepzy-sleep-cycle-tracker-Kii/barbados) - [Habitify: 習慣トラッカー](https://apptail.io/app/habitify-nkj/barbados) - [小睡眠 - 睡眠监测、梦话鼾声、白噪音、助眠、哄睡、冥想放松](https://apptail.io/app/app-kcl/barbados) - [松果倾诉-心理与情感咨询](https://apptail.io/app/app-jmbb/barbados) - [北京协和医院](https://apptail.io/app/app-eBbb/barbados) - [北京医院挂号网-医院挂号预约平台](https://apptail.io/app/app-CHbb/barbados) - [Gluroo Diabetes Logger](https://apptail.io/app/gluroo-diabetes-logger-BdHb/barbados) - [SOUNDPEATS SPORTS](https://apptail.io/app/soundpeats-sports-RqYb/barbados) ## NightGuard Available In - [United States](https://apptail.io/app/nightguard-sleep-habits-IYux/united-states) - [Belgium](https://apptail.io/app/nightguard-sleep-habits-IYux/belgium) - [China](https://apptail.io/app/nightguard-sleep-habits-IYux/china) - [Ecuador](https://apptail.io/app/nightguard-sleep-habits-IYux/ecuador) - [Spain](https://apptail.io/app/nightguard-sleep-habits-IYux/spain) - [Grenada](https://apptail.io/app/nightguard-sleep-habits-IYux/grenada) - [Italy](https://apptail.io/app/nightguard-sleep-habits-IYux/italy) - [South Korea](https://apptail.io/app/nightguard-sleep-habits-IYux/south-korea) - [Lebanon](https://apptail.io/app/nightguard-sleep-habits-IYux/lebanon) - [Sri Lanka](https://apptail.io/app/nightguard-sleep-habits-IYux/sri-lanka) - [Malaysia](https://apptail.io/app/nightguard-sleep-habits-IYux/malaysia) - [Norway](https://apptail.io/app/nightguard-sleep-habits-IYux/norway) - [Philippines](https://apptail.io/app/nightguard-sleep-habits-IYux/philippines) - [Pakistan](https://apptail.io/app/nightguard-sleep-habits-IYux/pakistan) - [Russia](https://apptail.io/app/nightguard-sleep-habits-IYux/russia) - [Slovakia](https://apptail.io/app/nightguard-sleep-habits-IYux/slovakia) - [Türkiye](https://apptail.io/app/nightguard-sleep-habits-IYux/turkey) - [Uruguay](https://apptail.io/app/nightguard-sleep-habits-IYux/uruguay) - [Barbados](https://apptail.io/app/nightguard-sleep-habits-IYux/barbados) - [Uzbekistan](https://apptail.io/app/nightguard-sleep-habits-IYux/uzbekistan) --- ## About AppTail [AppTail](https://apptail.io) is a mobile app intelligence platform providing app analytics, ASO (App Store Optimization) tools, keyword tracking, competitor analysis, revenue estimates, and review monitoring for iOS App Store apps. Track your app's performance, discover ranking keywords, monitor competitors, and analyze market trends. - [Search Apps](https://apptail.io) - [Top Charts](https://apptail.io/top-iphone-apps) - [Sign Up for Full Access](https://app.apptail.io/signup?utm_campaign=ai-crawl&utm_content=footer) *Data provided by [AppTail](https://apptail.io) - Mobile App Intelligence Platform*