Explained 7 Different Smartwatch Operating Systems – Pros and Cons

In today’s time, all the smartwatches being launched in the market are based on one or the other operating system. If this operating system is not installed in the smartwatch then your watch will be useless. Today there are many smartwatch operating systems in the market like Google’s Wear OS, Apple Watch OS, RTOS, and many others OS.

But when many people buy a smartwatch, they do not know which OS-based smartwatch they should buy and which operating system would be suitable for them. In today’s article, we are going to talk about different smartwatch operating systems, so read this article till the end.

Also Read: Single Chip vs Dual Chip Bluetooth Calling on Smartwatches

List of Smartwatch Operating Systems (OS)

You will get to see many smartwatches in the market which are based on different OS. This smartwatch varies in different prices, manufacturers and segments. In this article, I have tried to give detailed information about all the operating systems of smartwatches, which you can read.

1. Google’s Wear OS (Android Wear)

Google Wear OS

Wear OS is a very popular smartwatch operating system which is maintained by Google. This operating system was earlier known as Android Wear but now its name has been changed to Google Wear OS. In this, you get to see almost all the features of Android.

Wear OS allows you to access all Google features like Gmail, Google Assistant, Google Play Store, Google Maps, etc. Apart from this, you also get to see the support of WiFi, Bluetooth, NFC, and LTE for connectivity.

Along with this, you also get features like playing music, and videos, running social media apps like Instagram, Facebook, and WhatsApp, voice recognition, using gesture controls, and calling. You can also download third-party apps from the play store which are supported in Android.

Apart from this, many more features are given in it. You can do all the things in wear OS-based smartwatch that you can do in an Android smartphone.

Google Wear OS

Pros of Google’s Wear OS

  • Google Services Integration
  • Navigation Via Google Maps
  • Connectivity with WiFi, Bluetooth, NFC, and LTE
  • Support Many Apps
  • Easily and Highly Customizable
  • Seamless Portability

Cons of Google’s Wear OS

  • Hard to Connect to Sometimes
  • Smaller UI Elements
  • Different Development Style
  • Can Be Slow on Low-End Watches

2. Apple Watch OS

Apple Watch OS

Apple’s watch OS is an operating system designed for the Apple Watch. It has been created by the Apple company and is also maintained by them. This operating system was released on April 24, 2015, with Apple Watch.

In this, you will get to see many features of the iPhone and iPad which you get to see in the Apple Watch with a small screen. You also get to see the support of Siri voice assistant in it, through which you can perform many actions through your voice.

In this, you also get to see the support of location navigation, through which you can track your location very easily and with accuracy. Apart from this, in the latest version of the Watch OS, you also get the feature of crash detection and fall detection. Along with this, you also get to see the support of third-party apps.

According to different models of Apple Watch, you also get to see many different connectivity features like Bluetooth, WiFi, and Cellular. Currently, the 9.3 version of Watch OS has been launched in the market, in which you get to see many advanced and premium features.

Apple Watch OS

Pros of Apple Watch OS

  • ECG Function that Tracks Your Heart’s Rhythm
  • Detect a Hard Hit from a Fall Detector
  • You can Receive and Send Calls
  • Bluetooth, WiFi, and Cellular Connectivity
  • Navigation with Apple Maps

Cons of Apple Watch OS

  • Available Only for Apple Watch
  • Low Battery Life
  • Compatible only with iPhone

3. FreeRTOS


FreeRTOS is a real-time operating system designed for different smartwatches. This operating system is designed not only for smartwatches but also for other embedded devices. FreeRTOS was developed by Richard Barry in the year 2003 and was later maintained by Richard Barry’s company.

It is a lightweight, simple and fast operating system based on a single chip and also consumes very less memory. The special thing about this operating system is that it consumes very little battery and provides a smooth experience.

Many smartwatches are based on FreeRTOS because it is very cheap in price and also have a lot of flexibility. In this, brands can implement their software according to their name, which means that the brand whose smartwatch will be, shows the name of that brand in its software.

In this operating system, you do not get the facility to download third-party apps. The full UI control and features of watches based on this OS are in the hands of the brand. But in this, you get to see many features like Alexa, offline voice assistant, apps like Calculator, and more on some models.


Pros of FreeRTOS

  • Long Lasting Battery Life
  • Smooth User Interface
  • Customizable by Brands
  • Supporting Different MCU Platforms
  • Consume Less Memory

Cons of FreeRTOS

  • Does Not Support Third-Party Apps
  • Full Control of Brands
  • Program Crashes

4. Fitbit OS

Fitbit OS

Fitbit OS is a company’s proprietary operating system created by Fitbit company and it comes only with Fitbit smartwatches. This operating system is an OS based on FreeRTOS but it is customized and maintained by Fitbit company.

In Fitbit OS, you get to see many health-related features which keep alerting you from time to time. In this, features of 24/7 heart rate tracking, blood oxygen monitoring, fitness activity tracker, etc. are also added. Apart from this, you also get to see the support of NFC payments with Fitbit pay.

Apart from this, advanced features like Google Assistant, Bluetooth calling, and Amazon Alexa are also available. Apart from this, support for third-party apps is also seen in it. These features are available on the basis of different models of smartwatches.

Fitbit OS

Pros of Fitbit OS

  • Google Assistant, Bluetooth calling, and Amazon Alexa
  • NFC Payments Support
  • Smooth User Interface
  • Health Sensors are Good

Cons of Fitbit OS

  • Cellular Calling Not Supported
  • Google Services are Not Support

5. Garmin OS

Garmin OS

Garmin OS is also an operating system like Fitbit and many features are similar to both of them, but this operating system is operated by the company and is made for smartwatches only.

In this, you get to see many advanced health-related features whose sensor works accurately to a great extent. In this, you will get all the features from heart rate tracking to blood pressure monitoring, which is added according to its model. Along with this, the support of third-party apps is also available in it, which you can download and install on your smart smartwatches.

Talking about some special features of the Garmin operating system, you get to see the feature messaging support, check altitude, Bluetooth calling support, NFC payments through Garmin Pay, etc. which is very important to have in a smartwatch. Along with this, smartwatches based on this operating system are very smooth and consume less battery.

Garmin OS

Pros of Garmin OS

  • Bluetooth Calling Supports
  • NFC Payments Through Garmin Pay
  • Supports Third-Party Apps
  • Health Sensor is Good
  • Consume Low Battery

Cons of Garmin OS

  • Only for Garmin Smartwatches
  • Google Services for Not Support
  • Less Productive

6. Zepp OS

Zepp OS

Zepp OS is a new operating system that has been launched by replacing Amazfit OS. This operating system has been launched by the Amazfit company at the end of the year 2020.

Zepp OS is a very lightweight operating system based on FreeTROS microkernel open-source code. The size of this operating system is just 55MB which is 1/10 the size of Amazfit OS and 1/28 the size of Apple Watch OS.

In this operating system, you also get to see the support of third-party apps, which you can download through the app and use on your watch. Apart from this, a better health tracking sensor has also been given in it, whose accuracy is quite correct.

For connectivity, support for 4G LTE, Bluetooth, and WiFi is seen in Zepp OS. Apart from this, you will get to see many more advanced features in it. Along with this, Zepp OS comes with support for Alexa and offline voice assistant.

Zepp OS

Pros of Zepp OS

  • Dedicated Health Algorithm
  • Long Lasting Battery Life
  • 4G LTE, Bluetooth, and WiFi Connectivity
  • NFC Payments Enabled
  • Supports Third-party Apps

Cons of Zepp OS

  • No Proper Support for Google Services
  • Limited to Amazfit Smartwatches
  • No Portability

7. Tizen OS

Tizen OS

Tizen OS was the first operating system running on Samsung Galaxy Watch but later Samsung partnered with Google’s Wear OS. Tizen OS is a very similar operating system to wear OS but it also has some of its own features.

In this, you also get support to download third-party apps which you can use on your watch. Tizen OS also supports Samsung’s Galaxy Store for downloading apps.

In Tizen OS, you get to see support for advanced and premium features like NFC payments, Bixby assistant, cellular connectivity, built-in health tracking, and more. Apart from this, you also get the support of many health fitness sensors.

If seen, it is completely like the alternative operating system of wear OS which comes with Samsung smartwatches.

Pros of Tizen OS

  • Bluetooth, WiFi, and Cellular Connectivity
  • Support for Third-party Apps
  • Dedicated Samsung Health System
  • Smooth Connectivity
  • NFC Payments

Cons of Tizen OS

  • Missing Google Services Supports
  • Tizen OS is Officially Dead
  • Consumes More Battery Life

How to Check The OS on Your Smartwatch?

Above I have given you information about different types of smartwatch operating systems. But now the question comes how will you check the operating system of your smartwatch? Below I have explained the easy way to check the smartwatch OS.

Check Software Information in Your Watch: You can check the operating system of the smartwatch with the help of your watch itself, which is the easiest and correct way. You can check the software version and OS of your watch by going to the About section in the Settings option of your watch. setting>about section

Check Website Product’s Page: You can also find out the operating system of your watch by visiting the official website of the product. You have to go to the official website of the brand of your watch and go to the product page. Here you will get all the information about the watch along with the operating system.

Check Watch’s Retail Box: Any brand mentions all the features and information of its product on its retail box. You can see the operating system of your watch on the watch box which is mentioned on the backside of the box.

Wrapping Up

So friends, in today’s article, I have given you detailed information about 7 different smartwatch operating systems and also told you about the pros and cons of all these smartwatch OS. If you want to select an operating system in all these operating systems, then you can choose Google’s Wear OS or Apple Watch OS. If you have any kind of problem-related to this article, then you can ask by writing in the comment below.

Related: What is GPS in Smartwatch and How Does it Work & When it Use?

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