Comparison

WellGo vs CO

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • 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
Features
Read full description

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.

About

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.

Highlights
  • 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
Features
Read full description

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

WellGo4 screens
CO4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

WellGo ships an update every 5 weeks, CO fortnightly. The most recent releases landed on November 2, 2026 and November 7, 2026 respectively.

Scorecard6 real differences · 4 level
WellGo versus CO: the parameters behind the verdict, then further details
ParameterWellGoCO
PriceFreeFree
Rating3.3 (7 ratings)4.5 (1.2K ratings) — better
Positive reviews1.9% of reviews26.9% of reviews — better
Number of ratings71.2K — better
Update frequencyEvery 5 weeksFortnightly — better
AdsNo — betterYes
In-app purchasesNoNo
MonetizationFree — betterAd-supported
DevicesiPhone, iPodiPhone, iPod
Requires iOS14.014
Further details — not scored
Size35 MB702 MB
Age rating4+12+
DeveloperShenzhen Truescend Co., Ltd.深圳叩鼎科技有限责任公司

Customer experience

WellGo

All ratings7 ratings
Positive57.1%
Neutral0.0%
Negative42.9%
Written reviews52 reviews
Positive1.9%
Neutral9.6%
Negative88.5%

CO

All ratings1,177 ratings
Positive87.7%
Neutral4.2%
Negative8.2%
Written reviews238 reviews
Positive26.9%
Neutral18.9%
Negative54.2%

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
Show 2 more
  • 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
Show 2 more
  • Improved notification handling
  • GPS functionality

In-app purchases

None

WellGo

No in-app purchases

None

CO

No in-app purchases

Questions

Is WellGo free?
WellGo is free to download, with no in-app purchases.
Is CO free?
CO is free to download, with no in-app purchases.
Which has better reviews, WellGo or CO?
CO is rated higher. WellGo averages 3.3 out of 5 from 7 ratings, while CO averages 4.5 from 1.2K ratings.
Do WellGo or CO have ads?
CO shows ads; WellGo does not.
Which is updated more often, WellGo or CO?
WellGo ships an update every 5 weeks, and CO fortnightly. Most recently, WellGo was updated on November 2, 2026 and CO on November 7, 2026.

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