WellGo vs CO
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
WellGo
This app helps you achieve your fitness and sleep goals by tracking your activity, sleep cycles, and vital health metrics. It motivates you to stay active and provides insights into your physical changes over time.
- Exercise and sleep goal setting
- Sleep cycle and quality monitoring
- Activity tracking (steps, distance, calories)
- Vital health metric monitoring
- Trend analysis of physical changes
- Smart alarm for wake-up
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WellGo is a very fine sports health APP that you can carry around with you. It can encourage people to set their daily goals for exercise, sleep goals and encourage people to achieve goals and motivate people to become more active. Sleep monitoring, which monitors your sleep cycles and quality of sleep through heart rate, breathing, tiny movements, snoring and sound, can help you focus on your own sleep health. WellGo with different accessories (smart bracelet, smart watches, smart clothing, intelligent medical equipment, etc.) to monitor the movement of people are not ripe, distance, calories, heart rate, blood oxygen, blood pressure, blood lipid, weight, etc. Let WellGo take you: 1. Monitor the burning calories, walking distance, number of steps, sleep duration and quality in all weather. 2. Heart rate, blood sample, blood pressure, blood fat, weight, etc. 3. Observe the fluctuating trend of daily/weekly/month, and record your physical changes over time. 4. Set daily goals by week, challenge and surpass yourself. 5. Personalize your information and have a good view of yourself. 6. Set the ideal sleep target, and wait for the smart alarm clock in the App to wake you up during the shallow sleep stage.
CO
This app syncs data from a smartwatch, including steps, heart rate, and sleep. It also pushes phone notifications to the watch and allows for watch configuration like alarms and weather updates. Health data is for reference only and not for medical use.
- Sync steps, calories, heart rate, sleep, and exercise
- Display data intuitively with a new UI
- Push phone calls and text messages to the watch
- Configure watch alarms, schedules, and backlighting
- Sync weather and AGPS files for watch location
- Access iPhone Health for real-time data sync
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CO FIT is a newly designed and developed app for our new smartwatch collection only. main feature: Sync your steps, calories, mileage, heart rate, sleep and exercise records from your watch. The newly designed UI can display data more intuitively. After binding and authorization, we will push the phone's incoming calls and text messages to the watch to avoid losing information. You can use the app to configure the watch's sedentary alarms, alarms, schedules, backlighting, as well as sync weather and AGPS files (to help the watch locate) and other features for better use of the watch. During use, if you have any questions, you can ask at any time, we will listen to your suggestions and make improvements. Disclaimer: 1. The data displayed by the app is provided by the device, and the app only records and shares 2. All health data displayed in the app are not suitable for medical use, all health data are for reference only, these data should not be used as a substitute for the opinions of health care professionals For accurate data, consult your doctor. Authorization Instructions 1. We will access iPhone Health, sync device data to iPhone Health in real time 2. We will access the mobile phone location to obtain local weather information and synchronize it to the device display
Screenshots
Verdict
The clearest difference is rating: CO at 4.5 against WellGo's 3.3. CO also leads on ratings volume (1.2K vs 7) and review sentiment (27% vs 2%). WellGo's advantage is ads (none vs shown) and monetization model (free vs ad-supported). On price, in-app purchases, device support and iOS requirement 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.
CO holds the better App Store score, 4.5 against 3.3. That said, the two scores are not equally well evidenced: CO has 1.2K ratings behind it against 7, so its average is the more settled of the two. Written reviews point the same way: 2% of WellGo's written reviews are positive against 27% of CO's.
WellGo ships an update every 5 weeks, CO fortnightly. The most recent releases landed on November 2, 2026 and November 7, 2026 respectively.
| Parameter | WellGo | CO |
|---|---|---|
| Price | Free | Free |
| Rating | 3.3 (7 ratings) | 4.5 (1.2K ratings) — better |
| Positive reviews | 1.9% of reviews | 26.9% of reviews — better |
| Number of ratings | 7 | 1.2K — better |
| Update frequency | Every 5 weeks | Fortnightly — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free — better | Ad-supported |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 14.0 | 14 |
| Further details — not scored | ||
| Size | 35 MB | 702 MB |
| Age rating | 4+ | 12+ |
| Developer | Shenzhen Truescend Co., Ltd. | 深圳叩鼎科技有限责任公司 |
Customer experience
WellGo
CO
Bugs and requests
WellGo
Not enough reviews yet to summarise bugs or requests.
CO
Reported bugs
7 issues- Time setting not working
- Watch disconnecting frequently
- Inaccurate step and distance tracking
- Inability to change weight in user profile
- Firmware update bricking the watch
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- Syncing issues with iPhone
- Bluetooth not connecting properly
Requested features
7 requests- More watch face designs
- Customization options for watch faces
- Integration with Apple Health
- Ability to remove unwanted features
- Better language support
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- Improved notification handling
- GPS functionality
In-app purchases
WellGo
No in-app purchases
CO
No in-app purchases









