SZOS vs Vfit
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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。
Vfit
Track your fitness and sleep with real-time motion data and trend graphs. Set personalized reminders and sync your activity data with Apple Health for a comprehensive overview of your well-being.
- Real-time motion data tracking
- Weekly/monthly motion trend graphs
- Sleep data detection and analysis
- Personalized bracelet settings (alerts, reminders)
- Activity recording (riding, running)
- Apple Health data synchronization
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The main function: - Measure and record motion data in real time, and provide weekly or monthly motion trend graphs to make the movement situation clear at a glance; - Detect sleep data, record the length of deep sleep, shallow sleep time, help users understand their sleep in real time; - set the bracelet after connecting the bracelet, you can carry out a number of personalized settings such as call alert, smart alarm, sedentary reminder, step number, etc., to provide more convenience for the user's life; - record your riding, running, etc., visualize the results of the data, let you know your own movements; - you can connect the synchronization data to Apple Health, to achieve data movement, the user's steps, calories, distance, heart rate and other data will be synchronized; Note: - Support [health] application, you can synchronize the number of steps, calories and distance to the [health] application after authorization. - Continuous running GPS in the background may reduce your battery life
Screenshots
Verdict
The clearest difference is ads: Vfit at none against SZOS's shown. Vfit also leads on monetization model (free vs ad-supported). SZOS's advantage is rating (2.8 vs 2.6). On price, review sentiment, ratings volume and update cadence 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.
SZOS holds the better App Store score, 2.8 against 2.6. Both are backed by a comparable volume of ratings — 105 and 37 respectively. Written reviews split almost evenly too, at 5% and 6% positive.
SZOS ships an update every 3 weeks, Vfit every 5 weeks. The most recent releases landed on October 9, 2026 and October 6, 2026 respectively.
| Parameter | SZOS | Vfit |
|---|---|---|
| Price | Free | Free |
| Rating | 2.8 (105 ratings) — better | 2.6 (37 ratings) |
| Positive reviews | 5.3% of reviews | 6.3% of reviews — better |
| Number of ratings | 105 — better | 37 |
| Update frequency | Every 3 weeks — better | Every 5 weeks |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Ad-supported | Free — better |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 13.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 70 MB | 227 MB |
| Age rating | 4+ | 4+ |
| Developer | 晟 谷 | Shenzhen Weir Health Technology Co., Ltd |
Customer experience
SZOS
Vfit
In-app purchases
SZOS
No in-app purchases
Vfit
No in-app purchases
