Zeroner Fit vs ZDfit
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Zeroner Fit
This app syncs with smartwatches to track various health metrics like activity, heart rate, and sleep. It also enables convenient message and call notifications on your watch and offers GPS tracking for outdoor activities. Users can set reminders and share data with Apple Health.
- Activity and heart rate monitoring
- Blood pressure and sleep tracking
- Message and call notifications on watch
- GPS sports tracking
- Alarm and sedentary reminders
- Apple Health data sharing
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Zeroner Fit is an app that works with smart watches to help users manage health data. It can record the activity, heart rate, blood pressure, sleep and other data collected by the watch, and can see the trend of health data. When the smart watch is connected to the app, it also supports sending messages and call information to the watch, which is convenient for users to view on the watch without opening the mobile phone. In addition, the APP also supports setting alarm clocks, sedentary reminders, etc., which is convenient and fast. The APP has a GPS sports function, which supports users to record running trajectories while running, walking, and riding, and broadcast your distance, time, pace, etc. in the process. The APP supports the sharing of health data to Apple Health with the permission of the user.
ZDfit
This app pairs with a smartwatch to provide real-time fitness tracking, including steps, distance, and calories. It also monitors sleep quality and displays notifications from your smartphone, all while integrating with Apple Health.
- Real-time sports performance monitoring
- Step, distance, and calorie tracking
- Sleep quality monitoring
- Smartphone notifications (SMS, calls)
- Multi-sport activity tracking
- Apple Health integration
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这款应用程序与我们的智能手表配合使用,可直接从您的手腕获取最佳信息。 我们的智能手表不仅是一款传统的智能手表,更是一款功能强大的运动码表,可实时监测您的运动表现,并允许您接收来自智能手机的短信和通知,同时又不失时尚感。 这款应用程序与 Apple Health App 集成。 内置计步器可追踪您的步数、距离和卡路里消耗。 内置睡眠监测器可追踪您的睡眠质量。 This App together with our smartwatch provides you with the best set of information straight from your wrist. Without compromising your style, our smartwatch is not just a traditional smartwatch but a powerful sport computer to monitor your performance in real time, and also let you receive text message and notifications from your smartphone. This App integrates with the Apple Health App. A built-in pedometer tracks your steps, distance, and calories burned. A built-in sleep monitor tracks your quality of sleep. Powered with multi-sport functionality, our sport smartwatch lets you choose from a series of activity types such as running, biking, walking, hiking, trail run etc… In addition to its training functions, our sport smartwatch will also notify you when receiving incoming calls, text messages or social networks notifications.
Screenshots
Verdict
The clearest difference is rating: Zeroner Fit at 3.8 against ZDfit's 3.1. Zeroner Fit also leads on review sentiment (45% vs 19%) and iOS requirement (10.0 vs 12.0). On price, ratings volume, update cadence and ads 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.
Zeroner Fit holds the better App Store score, 3.8 against 3.1. Both are backed by a comparable volume of ratings — 28 and 75 respectively. Written reviews point the same way: 45% of Zeroner Fit's written reviews are positive against 19% of ZDfit's.
Zeroner Fit ships an update every 6 weeks, ZDfit monthly. The most recent releases landed on October 23, 2026 and October 20, 2026 respectively.
| Parameter | Zeroner Fit | ZDfit |
|---|---|---|
| Price | Free | Free |
| Rating | 3.8 (28 ratings) — better | 3.1 (75 ratings) |
| Positive reviews | 45.0% of reviews — better | 19.1% of reviews |
| Number of ratings | 28 | 75 — better |
| Update frequency | Every 6 weeks | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 10.0 — better | 12.0 |
| Further details — not scored | ||
| Size | 116 MB | 250 MB |
| Age rating | 4+ | 4+ |
| Developer | 红甲 祝 | Shenzhen Zhongdong Technology Co., Ltd. |
Customer experience
Zeroner Fit
ZDfit
Bugs and requests
Zeroner Fit
Not enough reviews yet to summarise bugs or requests.
ZDfit
Reported bugs
22 issues- Will not charge
- Trajectory push fails
- Wallpaper download fails
- Bluetooth linking fails
- Watch not updating without app
Show 17 moreShow fewer
- Watch not turning on after charging
- Watch faces not working consistently
- Heart rate monitor stops working when watch is off
- App is flaky
- App settings reset
- No message/email notifications
- Display reverts to 5 seconds
- Watch not turning on
- Display not visible in bright sun
- Pairing issues
- Audio Bluetooth not working for calls/rings
- Sleep tracking inaccurate
- Oxygen, heart rate, blood pressure monitoring stopped
- Phone syncing issues
- Sleep, Heart Rate & O2 levels not syncing to app
- Some functions won't turn on
- Watch stopped working after 2 weeks
Requested features
23 requests- Add voice assistant
- Add weather data
- Enable calling out and answering phone calls
- Improve dial editing functionality
- Improve trajectory push functionality
Show 18 moreShow fewer
- Fix wallpaper download for customization
- Improve Bluetooth linking
- Provide operating instructions and manual
- Enable watch updates without app
- Improve watch face customization options
- Enable Strava integration
- Improve app settings persistence
- Enable message and email notifications
- Enable blood pressure monitoring
- Add pound and feet conversion
- Enable message deletion from watch
- Improve phone syncing
- Improve time setting accuracy
- Sync sleep, heart rate, and O2 levels to app
- Improve navigation and usability
- Enable GPS and accurate compass
- Add US units for pressure and altitude (inches, pounds, feet, barometers)
- Improve sleep app functionality
In-app purchases
Zeroner Fit
No in-app purchases
ZDfit
No in-app purchases









