Many people who have not bought Apple Watch yet, believe that the watch is useless without iPhone and it will be not much use of it in the gym without the smart phone.

One of iOS-developers of Facebook decided to disprove this statement and compared the accuracy of work of Apple Watch in autonomous mode with indicators of other devices.

How precisely does Apple Watch work without iPhone

Smart watches from well-known Garmin company and Apple Watch Sport took part in the test. The developer was jogging for one hour, and both devices read indicators on his wrists. The result was pleasantly surprising.

Apple Watch Sport has estimated the run distance with amount precision – two decimals, as well as the time of training and even average heart rate. Still there was inaccuracy with calories; however it’s not crucial, especially taking into account accuracy of other measurements.