As someone who exercises on a daily basis, the Activity app on my iPhone and Apple Watch really help me keep track of my goals and progress.

When you get going with your day, the app on your wrist will “automatically track your daily movements.”

Why is it useful?

  • You get to stay on top of your progress
  • Customize notifications based on given data
  • Create and meet goals

While I enjoy taking advantage of this application on both devices, it often gives me a headache aka become unreliable.

Every once in awhile, there will be a delay in data between the Activity app on my Apple Watch and iPhone. In other words, same app but different progress and update. Sometimes one device provides the most accurate steps and movements while the other still stuck on yesterday’s report.


After doing some digging and trying out various methods, here are a few of my best attempt to fix the problem. You can follow along to resolve this issue as well.

How to get your Activity App to Sync

The first thing I did was rebooting my Apple Watch, this method works for a few hours and then it stopped.

The problem re-appear again.


I turned on Airplane Mode on my Apple Watch so that it can disconnect from the iPhone then I turned it off. Once both iPhone and Apple Watch are connected again, the app automatically syncs with all the latest information.

I also visited the Apple Support forum to see if anyone else is having the same syncing issue. Surely, there was a bunch of complaints. Someone shared this method:

  1. Go on your Watch app, go to Activity > Progress Update > switch to None
  2. Restart your iPhone
  3. Turn off Wi-Fi and turn it back on

I hope one of the solutions above can fix the problem of your Activity app. And don’t forget to keep walking, keep moving, and achieve your goal.

  • michel C


    Did you encounter the following bug: While in exercice my watch will suddenly stop recording calories and heart rate. Time counter will continue but a 30 minutes bike at 32Km/h will got stuck at let say 15 calories for ever. Then the iPhone app will add the full calories activity but showing the 15 calories in the details. Also while not in exercice mode the little green man will show up as in use and the sensor (green light) on even if not in exercice mode. Had apple replace the watch, got the new one yesterday and same problem

  • w

    thank you no one else says this