Comparison

SMART vs CO

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

Head to head
About

SMART

Connect your smartwatch to your phone to access multi-dimensional health data, including exercise, sleep, and health monitoring. Synchronize notifications and calls, manage watch faces, and adjust device settings. Integrates with iPhone Health for real-time data synchronization.

Highlights
  • Health and sleep data tracking
  • Message and call notifications
  • Watch face management
  • Device function settings
  • iPhone Health integration
  • Local weather display
Features
Read full description

Pair and sync your smartwatch with your phone using the SMART-TIME PRO APP. The main function 1. Provide multi-dimensional health data such as exercise, health monitoring, sleep quality, etc. 2. Synchronize message notifications and incoming calls 3. WatchFace management 4. More function settings for the watch Disclaimer: 1. The data displayed by the app is provided by the device, and the app only records and shares 2. All the health data displayed in the app are not suitable for medical purposes. All health data is for reference only. These data should not be used to replace the opinions of health care professionals For accurate data, please consult your doctor. License description 1. We will access iPhone Health and synchronize device data to iPhone Health in real time 2. We will access the mobile phone location to get local weather information and synchronize it to the device display About Subscriptions: Subscriptions are automatically renewing. Payment will be charged to your iTunes account at confirmation of purchase and will automatically renew within 24 hours prior to the end of the current subscription period. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://your privacy policy link

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

SMART4 screens
CO4 screens

Verdict

The call

The clearest difference is in-app purchases: CO at none against SMART's 10. CO also leads on update cadence (fortnightly vs monthly) and review sentiment (27% vs 19%). On price, rating, ratings volume 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. SMART sells 10 one-off in-app purchases. CO asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.5 for SMART against 4.5 for CO. Both are backed by a comparable volume of ratings — 1.4K and 1.2K respectively. Written reviews are what separate them: 19% of SMART's written reviews are positive against 27% of CO's.

UpkeepUpdate frequency

SMART ships an update monthly, CO fortnightly. Both last shipped on November 3, 2026.

Scorecard4 real differences · 6 level
SMART versus CO: the parameters behind the verdict, then further details
ParameterSMARTCO
PriceFreeFree
Rating4.5 (1.4K ratings) — better4.5 (1.2K ratings)
Positive reviews18.8% of reviews26.9% of reviews — better
Number of ratings1.4K — better1.2K
Update frequencyMonthlyFortnightly — better
AdsYesYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesAd-supported — better
DevicesiPhone, iPodiPhone, iPod
Requires iOS14.014
Further details — not scored
Size767 MB702 MB
Age rating+1212+
DeveloperShenzhen Smart Care Technology Co., Ltd深圳叩鼎科技有限责任公司

Customer experience

SMART

All ratings1,404 ratings
Positive87.7%
Neutral5.1%
Negative7.1%
Written reviews869 reviews
Positive18.8%
Neutral19.0%
Negative62.3%

CO

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

User reviews

SMART

From 1.4K App Store ratings

What we love

  • 👍 Good watch
  • 🚀 Responsive app
  • 📊 Helpful for health tracking

Room to improve

  • 🐛 Frequent app crashes
  • 🔌 Connectivity issues
  • ⏰ Time sync problems
  • 📊 Inaccurate tracking

CO

From 1.2K App Store ratings

What we love

  • 👍 Easy to connect
  • 🤩 Great watch and app experience
  • 🤩 Awesome watch
  • 👍 Good for the price
  • 👍 Looks good

Room to improve

  • 🐛 Bluetooth connection issues
  • 🐛 App crashes and freezes
  • 🐛 Inaccurate measurements
  • 🐛 Notifications not working
  • 🐛 Firmware issues after updates

Bugs and requests

SMART

Reported bugs

3 issues
  • App not opening
  • Sync issues between watch and app
  • Unreliable Bluetooth connection

Requested features

3 requests
  • More watch face options
  • Improved notification support
  • Enhanced workout tracking

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

10 purchases

SMART

One-time10
  • 7-Day Value Trial Package$0.29
  • Cost-effective dials$0.49
  • Single Game - Unlimited Play$0.99
Show 7 more
  • Preferred Dials$0.99
  • Luxury Dials$1.49
  • Game-One-Year Package$3.99
  • VIP(monthly)$4.00
  • VIP(3-month package)$9.00
  • VIP(half year package)$27.00
  • VIP(1 year package)$29.00
None

CO

No in-app purchases

Questions

Is SMART free?
SMART is free to download, with in-app purchases available.
Is CO free?
CO is free to download, with no in-app purchases.
Which has better reviews, SMART or CO?
SMART is rated higher. SMART averages 4.5 out of 5 from 1.4K ratings, while CO averages 4.5 from 1.2K ratings.
Do SMART or CO have ads?
Both SMART and CO show ads.
Which is updated more often, SMART or CO?
SMART ships an update monthly, and CO fortnightly. Most recently, SMART was updated on November 3, 2026 and CO on November 3, 2026.

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