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Haylou Fun - Smart Watch App
Score Overview
3.4
Overall Rating
3.1
App Store
3.7
Google Play
5M+Google Play Downloads
Haylou Fun
Dongguan Liesheng Electronic Co., Ltd.Free
Haylou Fun is the official companion app for Haylou smartwatches. Track health, manage 100+ sport modes, customize watch faces, and sync with Apple Health — free for iOS & Android.
Step Counting & Activity — records daily steps, distance, and calories burned with weekly/monthly history dashboards
Menstrual Cycle Tracking — period tracking with cycle predictions and reminders for female users
Watch Face Store — rich marketplace with hundreds of downloadable watch face designs and custom photo face support
Smart Notifications — forwards calls, SMS, WhatsApp, WeChat, and other app alerts from phone to watch
Apple Health Sync — integrates with Apple HealthKit to centralize health data on iOS devices
Google Fit Sync — syncs fitness data with Google Fit on Android for unified health tracking
Weather Display — shows real-time weather information on your Haylou watch with configurable locations
Alarm & Reminder Management — set alarms, sedentary reminders, and drink water alerts from the app
Firmware Updates — over-the-air updates to keep your Haylou watch software current
Device Management — configure notification preferences, DND mode, time format, and screen settings
Multi-Device Support — compatible with Haylou Watch 3/4, Solar Lite 2, RS4/RS5, RT series, Vibe, and more
Introduction
Haylou Fun is the official companion app for Haylou smartwatches, developed by Dongguan Liesheng Electronic Co., Ltd. With over 5 million downloads on Google Play and a growing presence on iOS, Haylou Fun bridges your Haylou wearable hardware with your smartphone — delivering comprehensive health tracking, workout management, watch face customization, and smart notifications in one unified interface.
Designed for users of the Haylou RS series, Solar Lite, Watch 4, and other Haylou devices, the app offers a professional health monitoring experience with 100+ exercise modes, sleep analysis, heart rate tracking, and blood oxygen monitoring.
How Haylou Fun Works
Haylou Fun connects to your Haylou smartwatch via Bluetooth Low Energy (BLE). Once paired, the app continuously syncs health data — steps, heart rate, sleep stages, blood oxygen readings, and sports session records — from your wrist to your phone. Data is displayed in clean daily, weekly, and monthly dashboards so you can monitor long-term health trends.
The app also acts as a notification bridge: incoming calls, SMS, WhatsApp, and other app alerts are forwarded from your phone to your watch, so you stay connected without constantly checking your phone.
Health & Fitness Tracking
Step Counting and Daily Activity
Haylou Fun records your daily step count, distance traveled, and calories burned, comparing them against your personal goals. Weekly and monthly summaries let you spot activity trends at a glance.
Sleep Monitoring
The app provides multi-dimensional sleep analysis, tracking total sleep duration, deep sleep, light sleep, and awake periods. It generates a nightly quality score and offers to help you build better sleep habits.
Technical Specifications
Android Package Namecom.yingsheng.hayloufun
App Store ID1534983357
Android Minimum VersionAndroid 6.0+
iOS Minimum VersioniOS 13.4
App Size (iOS)215.9 MB
Current Version (iOS)3.6.8
Last Updated (iOS)February 11, 2026
Last Updated (Android)February 11, 2026
Google Play Downloads5M+
Google Play Rating3.7 / 5 (60.2K reviews)
App Store Rating3.1 / 5 (196 ratings)
Supported LanguagesEnglish and 30 more (31 languages total)
In-App PurchasesNone (free)
Platform SupportiOS 13.4+ (iPhone, iPad, Mac M1+, Vision), Android 6.0+
Data CollectedLocation (coarse), User Content, Device ID, Usage Data, Crash/Performance Data. Data not linked to identity. Encrypted in transit. Deletion available.
Haylou Fun is the official companion app developed by Dongguan Liesheng Electronic Co., Ltd. for Haylou smartwatches and fitness devices. After pairing your Haylou watch via Bluetooth, the app serves as your health dashboard and device manager — displaying step counts, heart rate history, sleep analysis with improvement suggestions, blood oxygen data, and 100+ sports mode records. It also forwards call alerts, SMS, and third-party app notifications from your phone to your watch, lets you choose watch face designs from a built-in store, and syncs data with Apple Health and Google Fit. The app is free on both Android (Google Play, 5M+ downloads) and iOS (App Store).
How do I connect Haylou Fun to my phone?
To connect Haylou Fun to your phone: (1) Download Haylou Fun from the Google Play Store (package: com.yingsheng.hayloufun) or Apple App Store (ID: 1534983357); (2) Open the app and create an account or log in; (3) Enable Bluetooth on your phone; (4) Power on your Haylou smartwatch and make sure it's in pairing mode; (5) In the Haylou Fun app, tap the device section and select 'Add Device'; (6) Select your watch from the scan list; (7) Confirm the pairing on both phone and watch. Once connected, grant notification access when prompted. The app will then continuously sync health data and forward notifications.
Why is my Haylou Fun app not working or not connecting?
Common Haylou Fun connection issues and fixes: (1) Bluetooth off — ensure Bluetooth is enabled on your phone; force-close the app and reopen it. (2) Watch out of range — keep phone and watch within 1–2 meters during initial pairing. (3) Cache issue — go to phone Settings > Apps > Haylou Fun > Storage, clear cache and data, then relaunch the app. (4) OS compatibility — after major iOS updates (like iOS 18), you may need to re-pair the watch. Remove it from Haylou Fun and your phone's Bluetooth settings, then pair again. (5) Update the app — make sure you have the latest Haylou Fun version from the Play Store or App Store. (6) Restart both devices — power off both your phone and watch, then restart and try again.
Which Haylou watches are compatible with Haylou Fun?
Haylou Fun supports a range of Haylou-branded smartwatches, including: HAYLOU Watch 3, Watch 4, Watch 4S, Solar Lite 2, Solar Plus, RS4, RS4 Plus, RS5, RT, RT2, RT3, Vibe, IRON Neo, and other Haylou wearable devices. If your Haylou watch's packaging shows a QR code pointing to Haylou Fun, or if the setup instructions mention 'Haylou Fun,' this is the correct app. Note that some newer Haylou models may use the separate 'HAYLOU WATCH' app instead — check your watch's documentation.
Can Haylou Fun sync with Apple Health or Google Fit?
Yes. Haylou Fun integrates with Apple Health (HealthKit) on iOS, allowing you to sync step data and other health metrics to Apple's centralized health dashboard. On Android, the app supports Google Fit integration to sync fitness data. To enable: go to Haylou Fun settings, find the health data sync option, and authorize the connection to Apple Health or Google Fit. Once enabled, your Haylou watch data will appear in the respective health platform alongside data from other apps and devices.
How do I change the watch face on Haylou Fun?
To change your watch face in Haylou Fun: (1) Open the Haylou Fun app and make sure your watch is connected; (2) Go to the 'Device' section; (3) Find the 'Watch Face' or 'Dial Store' option; (4) Browse the available designs — there are hundreds of free options across different styles; (5) Tap a design you like and select 'Apply' or 'Download & Set'; (6) Wait for the transfer to complete via Bluetooth (typically 30–60 seconds). Some Haylou models also support custom photo watch faces — look for the 'Custom' or 'DIY' option in the watch face settings.
Does Haylou Fun support sleep tracking?
Yes. Haylou Fun provides multi-dimensional sleep analysis for supported Haylou devices. It tracks your total sleep duration and breaks it into deep sleep, light sleep, and awake periods. The app generates a nightly sleep quality score and offers personalized improvement suggestions based on your sleep patterns. You can view daily, weekly, and monthly sleep trends to monitor your sleep habits over time. For best accuracy, wear your Haylou watch while sleeping and ensure Bluetooth stays connected.
Is the Haylou Fun app free?
Yes, Haylou Fun is completely free to download and use on both Android and iOS. There are no subscription fees, no premium tiers, and no in-app purchases. All features — health tracking, 100+ sport modes, watch face store, notifications, Apple Health/Google Fit sync, and device management — are available at no cost. The app is monetized through the sale of Haylou hardware devices rather than app subscriptions.
What sports modes does Haylou Fun support?
Haylou Fun supports over 100 exercise modes on compatible Haylou watches, including but not limited to: outdoor running, indoor running, walking, hiking, cycling, swimming, yoga, HIIT, strength training, basketball, football, tennis, badminton, and many more. Each workout session records duration, heart rate zones, calories burned, distance (where applicable), pace, and GPS trajectory for outdoor activities. Voice prompts provide real-time status updates during workouts.
How accurate is the health data from Haylou Fun?
Haylou Fun health data (heart rate, SpO₂, sleep tracking, steps) uses optical sensors in your Haylou smartwatch to provide consumer-grade wellness readings. While generally reliable for daily health monitoring and fitness trends, these measurements are not medical-grade and should not be used for medical diagnosis or treatment. Factors like wrist position, skin tone, movement, and ambient light can affect accuracy. For medical concerns, always consult a healthcare professional. The step counter and calorie tracking provide good relative accuracy for tracking daily activity trends.
User Reviews
Navil101
App Store
Haylou Fun works well with my Haylou watch. Health tracking is accurate and syncs reliably. The watch face store has decent variety. My only request is adding support for custom watchface file uploads and always-on display customization. Otherwise a solid companion app.
O2xdaIIs
ziko_vai
Prosenjitbappii
Neda37
Mahmudul Islam
Rajesh Kumar
Sarah M.
Ahmed Hassan
Li Wei
Changelog
v3.6.8 — Feb 11, 2026 (iOS):
· Add HAYLOU Watch 3
· Fix known bugs
v3.6.7 — Dec 22, 2025 (iOS):
· Add HAYLOU Solar Lite 2
· Optimizing ephemeris
v3.6.6 — Oct 30, 2025 (iOS):
· Add HAYLOU Vibe
· Fix known bugs
v3.6.5 — Aug 30, 2025 (iOS):
· HAYLOU Watch 4 auto-light screen function
v3.6.4 — Aug 14, 2025 (iOS):
· Fix known bugs
v3.6.3 — Aug 8, 2025 (iOS):
· Fix known bugs
v3.6.2 — Jul 23, 2025 (iOS):
· Fix known bugs
v3.6.1 — Jun 19, 2025 (iOS):
· Add HAYLOU Watch 4S
· Fix known bugs
v3.6.0 — May 6, 2025 (iOS):
· Add HAYLOU IRON Neo
· Support deletion of exercise records
v3.5.9 — Apr 2025 (iOS):
· Improved Bluetooth connection stability
· Enhanced sleep data accuracy
· Bug fixes and performance improvements
Pricing InfoFree to download and use on both Android and iOS. No subscription required. All health tracking, sport modes, watch face store, and device management features are included at no cost.
Overall a good app for managing my Haylou smartwatch. Heart rate and step tracking work great. The sleep analysis feature gives detailed breakdowns. One issue: weather information was incorrect after a recent update, but everything else runs smoothly.
App Store
Nice app with good functionality. Notifications come through reliably and the 100+ sport modes are impressive. Would love to see caller name display on the watch improved and battery percentage should go up to 100% instead of capping at 95%. Still recommended.
App Store
Haylou Fun is a solid companion app. Easy setup, reliable Bluetooth connection, and the health dashboard is clean and informative. After the iOS 17 update notifications stopped briefly but got fixed in the next app update. Works well for daily health monitoring.
App Store
App functions well for basic health tracking and watch management. After the iOS 18 update my watch stopped showing notifications properly — had to re-pair the device. The watch face selection is good and sleep tracking gives useful insights. Hope they fix iOS compatibility faster.
Google Play
Sleep is recorded everyday. I can check on my watch. But in the app, historical data shows only alternative days. Not continuous data. But in the watch, everyday I checked the data is collected. Why is that? I don't have idea. Can you help devs? Otherwise the app works great for step counting and heart rate.
Google Play
Good app for Haylou watches. Paired easily with my RS4 and all features work — heart rate, sleep monitoring, notifications. The watch face store has lots of options. Data syncs well with Google Fit. Only minor complaint is occasional slow loading on the health dashboard.
Google Play
Really like the Haylou Fun app. It connects quickly to my Haylou Solar Lite and the workout tracking across 100+ modes is comprehensive. The sleep analysis with suggestions is a nice touch. Bluetooth connection stays stable throughout the day. Recommended for Haylou users.
Google Play
The app does what it needs to do. Health tracking is decent and notifications work fine. However, the UI could use some modernization and there are occasional sync delays. Watch face transfer sometimes takes longer than expected. For a free app, it's acceptable.
Google Play
Basic functionality is solid — step counting, heart rate, and sleep tracking all work. The multi-language support is appreciated. My main issue is that some advanced features like SpO2 monitoring don't always sync properly. Also wish there were more customization options for the dashboard layout.
3.4
Google Play Downloads5M+
Version3.6.8
Size215.9 MB
Last Updated2026/02/11
Age Rating4+
Supported DevicesHAYLOU Watch 3, Watch 4, Watch 4S, Solar Lite 2, Solar Plus, RS4, RS4 Plus, RS5, RT, RT2, RT3, Vibe, IRON Neo, and other Haylou-branded smartwatches and fitness devices
CompatibilityRequires iOS 13.4 or later (iPhone, iPad, Mac with Apple M1 or later, Apple Vision). Android 6.0+ with Bluetooth 4.0 or above.
Published date2026/03/13
personalized sleep improvement suggestions
Heart Rate Monitoring
Real-time and continuous heart rate tracking captures data during workouts and throughout the day. The Haylou Fun app displays your HR history in chart form, making it easy to monitor cardiovascular trends over days and weeks.
Blood Oxygen (SpO₂) Monitoring
For supported device models, Haylou Fun shows blood oxygen saturation readings. As with all consumer wearables, these readings are for general wellness reference only and are not intended for medical diagnosis.
Menstrual Cycle Tracking
Female users can use the menstrual cycle tracking feature with reminders for supported devices, helping to monitor and predict menstrual cycles conveniently.
100+ Sports Modes
Haylou Fun supports over 100 exercise modes including walking, running, cycling, swimming, yoga, and more. Per-session records include duration, heart rate zones, calories burned, distance, pace, and GPS trajectory where applicable. Voice prompts provide real-time status updates during workouts.
Smart Notifications & Connectivity
Call & SMS Alerts
When your phone rings or receives an SMS, Haylou Fun pushes the notification to your smartwatch, showing caller ID or message content on the watch screen.
Third-Party App Notifications
Configure real-time push notifications from apps like WhatsApp, WeChat, Facebook, Telegram, and other messaging or social apps directly to your watch.
Apple Health & Google Fit Integration
Haylou Fun syncs health data with Apple Health (HealthKit) on iOS and Google Fit on Android, allowing you to centralize all your health data in one place.
Device Management & Customization
Watch Face Store
Haylou Fun includes a rich watch face marketplace with hundreds of downloadable designs — from sporty to minimalist — so you can personalize your watch display. Custom photo watch faces are also supported on compatible devices.
Device Settings
Manage all your Haylou watch settings from the app: notification preferences, alarm management, weather display, do not disturb mode, time format, screen-on duration, and more.
Firmware Updates
Keep your Haylou smartwatch up to date with over-the-air firmware updates delivered directly through the Haylou Fun app.
Compatible Haylou Devices
Haylou Fun is the official companion app for a range of Haylou smartwatches, including:
HAYLOU Watch 3, Watch 4, Watch 4S
HAYLOU Solar Lite 2, Solar Plus
HAYLOU RS4, RS4 Plus, RS5
HAYLOU RT, RT2, RT3
HAYLOU Vibe
HAYLOU IRON Neo
And other Haylou-branded wearable devices
If your Haylou watch's packaging instructs you to download "Haylou Fun," this is the correct application for your device.
Is Haylou Fun Safe? Privacy & Data
Haylou Fun is published by Dongguan Liesheng Electronic Co., Ltd. On the App Store, the app declares it collects Location, User Content, Device Identifiers, Usage Data, and Crash/Performance Data — none linked to your identity. On Google Play, it states data is encrypted in transit and you can request data deletion.
The app's privacy policy is available at the official Haylou support site.
Important: Haylou smartwatches are consumer wellness devices, not medical devices. All health measurements (heart rate, SpO₂, blood pressure) are for general reference only and should not be used for medical diagnosis or treatment.
Haylou Fun vs Similar Apps
Haylou Fun occupies the companion app space alongside Da Fit, GloryFit, FitPro, and similar smartwatch companion apps. Haylou Fun differentiates itself with:
Official support for Haylou-branded devices
100+ exercise modes with detailed workout analytics
Apple Health and Google Fit integration
Multi-dimensional sleep analysis with improvement suggestions
Rich watch face marketplace with custom photo support
