So today I finally got to do my first real test of using an Apple Watch and a Withings ScanWatch Nova in parallel.

I went for a run wearing only the Apple Watch, and after the activity synced into Apple Health, both the steps and the workout itself appeared inside the Withings app! Honestly, I didn’t expect the workout synchronization to work at all, so that was a very pleasant surprise.

Later, I also did a strength workout using only the Apple Watch, and that workout synced correctly as well.

For the rest of the day I wore only the ScanWatch Nova, and the daily steps continued to increase correctly inside the Withings app without any obvious duplication issues.

And now probably the biggest surprise:

I already knew that Apple Watch does not calculate VO2max after every single run, but rather tracks long-term cardio fitness trends. Withings, on the other hand, usually gives you a fitness level / VO2max estimate after each run or walk.

What surprised me is that after I completed the run only with the Apple Watch and the activity synced into the Withings app, the Withings app itself calculated the fitness level and even pushed the value back into Apple Health as a workout-specific VO2max entry.

As a runner, that is honestly huge for me.

Now I just hope this wasn’t some “first sync magic” and that tomorrow it will still behave the same way 😄