Haylou Fun vs SZOS
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Haylou Fun
This app connects to smart devices to manage your health and exercise data. It tracks various health metrics, records over 100 sports modes, and allows for device management and customization with rich watch faces. It also offers sleep monitoring and analysis, with data sharing capabilities.
- Record health data (steps, heart rate, sleep, etc.)
- 100+ sports modes with voice broadcast
- Device management and settings
- Customizable watch faces
- Night sleep monitoring and analysis
- Data sharing with Apple Health
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In order to bring you a more comprehensive and professional user experience, inspire you to enjoy sports, live a more active and healthy life, and welcome a stronger and better self, we have upgraded Haylou Fun. Haylou Fun can support connecting a variety of smart devices and integrate health and exercise data to comprehensively manage your health. Key features of Haylou Fun: 【Record health data】 Record steps, consumption, heart rate, sleep, blood oxygen saturation, menstrual tracking and other data to pay attention to your own health. 【Multiple sports records】 Support 100+ exercise modes, record data such as duration, heart rate, consumption, distance, trajectory, pace, exercise target, etc. during exercise, and support voice broadcast of exercise status. 【Device Management】 Manage the device on the APP side, and enable settings such as message notification, call reminder, alarm clock, weather, etc. 【Rich dials】 There are a large number of watch faces to choose from. You can choose your favorite watch face to synchronize with the watch according to your mood, and you can set your favorite picture as your own watch face. 【Night sleep monitoring and analysis】 Record sleep information every night, analyze your sleep quality score by analyzing the proportion of different sleep in sleep, and provide corresponding sleep analysis and suggestions. 【Data Sharing]】This app supports Apple's "Health" app. After authorization, you can synchronize your steps and other health data to the "Health" app. Haylou Fun will be connected to more smart devices in the future, adding more useful and fun functions, let us accompany you to live a healthy life together! If you have any questions or suggestions, you can send feedback to: service@haylou.com (or submit feedback in the app)
SZOS
This app syncs with a smart watch to track your daily activity, including steps, heart rate, and sleep patterns. It provides insights into your health and fitness metrics.
- Step tracking
- Heart rate monitoring
- Sleep analysis
- Syncs with smart watch
- Activity mode
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"SZOS APP设计为与SZOS智能手表配合使用, 它可以帮助您测量步数,心率,睡眠等" 【温馨提示】 用户开启运动模式后,手机切换至后台仍会持续定位,长时间使用GPS在后台运行可能显著减少电池寿命,影响续航时间。
Screenshots
Verdict
The clearest difference is ads: Haylou Fun at none against SZOS's shown. Haylou Fun also leads on rating (3.3 vs 2.8) and monetization model (free vs ad-supported). SZOS's advantage is ratings volume (105 vs 20) and iOS requirement (13.0 vs 15.0). On price, update cadence, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Haylou Fun holds the better App Store score, 3.3 against 2.8. That said, the two scores are not equally well evidenced: SZOS has 105 ratings behind it against 20, so its average is the more settled of the two. Written reviews point the same way: 14% of Haylou Fun's written reviews are positive against 5% of SZOS's.
Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 23, 2026 and October 22, 2026 respectively.
| Parameter | Haylou Fun | SZOS |
|---|---|---|
| Price | Free | Free |
| Rating | 3.3 (20 ratings) — better | 2.8 (105 ratings) |
| Positive reviews | 13.7% of reviews — better | 5.3% of reviews |
| Number of ratings | 20 | 105 — better |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free — better | Ad-supported |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 15.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 293 MB | 70 MB |
| Age rating | 4+ | 4+ |
| Developer | Dongguan Liesheng Electronic Co.,Ltd. | 晟 谷 |
Customer experience
Haylou Fun
SZOS
Bugs and requests
Haylou Fun
Reported bugs
4 issues- Notifications not appearing on watch
- Frequent disconnections between watch and app
- App crashes and freezes
- Inaccurate data sync and recording
Requested features
4 requests- Add more watch face options
- Improve notification functionality
- Enhance connectivity and sync
- Introduce security and privacy features
SZOS
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Haylou Fun
No in-app purchases
SZOS
No in-app purchases









