# SMART vs CO

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.

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

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.

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

## The numbers

| Metric | SMART | CO |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (1.4K ratings)](https://appshunter.io/ios/app/smart-time-pro/id1494999335/reviews)** | [4.5 (1.2K ratings)](https://appshunter.io/ios/app/co-fit/id1514529526/reviews) |
| Number of ratings | **1.4K** | 1.2K |
| Positive reviews | 18.8% of reviews | **26.9% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Monthly | **Fortnightly** |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 767 MB | 702 MB |
| Requires iOS | 14.0 | 14 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | +12 | 12+ |
| Developer | [Shenzhen Smart Care Technology Co., Ltd](https://appshunter.io/developer/1016364789) | [深圳叩鼎科技有限责任公司](https://appshunter.io/developer/1514529525) |

## What reviewers say

### SMART

[App page](https://appshunter.io/ios/app/smart-time-pro/id1494999335)

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:** macOS Compatibility, Vision Pro support

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 7-Day Value Trial Package | $0.29 | one-time |
| Cost-effective dials | $0.49 | one-time |
| Single Game - Unlimited Play | $0.99 | one-time |
| Preferred Dials | $0.99 | one-time |
| Luxury Dials | $1.49 | one-time |
| Game-One-Year Package | $3.99 | one-time |
| VIP(monthly) | $4.00 | one-time |
| VIP(3-month package) | $9.00 | one-time |
| VIP(half year package) | $27.00 | one-time |
| VIP(1 year package) | $29.00 | one-time |

**What reviewers like**

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

**What reviewers complain about**

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

**Reported bugs**

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

**Requested features**

- More watch face options
- Improved notification support
- Enhanced workout tracking


### CO

[App page](https://appshunter.io/ios/app/co-fit/id1514529526)

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:** macOS Compatibility, Vision Pro support

**In-app purchases:** none

**What reviewers like**

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

**What reviewers complain about**

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

**Reported bugs**

- Time setting not working
- Watch disconnecting frequently
- Inaccurate step and distance tracking
- Inability to change weight in user profile
- Firmware update bricking the watch

**Requested features**

- More watch face designs
- Customization options for watch faces
- Integration with Apple Health
- Ability to remove unwanted features
- Better language support


## Frequently asked 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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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*