Activity data should be the easiest to capture for an Oura ring, be that Gen2 or Gen3 – or the easiest to get wrong.

Things will get rather more interesting when the ring’s third generation gets activity (workout) heart rate tracking, but that’s scheduled for later in 2022.

There is a good chance for differences in this comparison data, however, because I wore the Gen2 ring on my left hand, as I had done for more than a year, while the Gen3 ring started out on my left hand, then had to get switched to the right (which is my dominant) hand.

Activity Score

Let’s start, as before, with the overall score the Oura ring (or rather: app) gives.

Activity Score, Oura Ring Gen2 vs Gen3
Activity Score

I’m not sure what the Gen3 ring data did on day 5 to have given me such a low activity score.

In the end, in week 4-5 of the data here, activity scores run in tandem.

Before that, there are quite some differences–extreme ones at the beginning.

At least some of that may well have been a result of the activity score being based on previous week’s data (and other factors), so that it took some time to become sensible.

Then again, with strange scores from the Gen3 Oura ring activity tracking, it’s odd. This ring took over my established Oura account, so it had data already.

Still, it’s one of those cases where data differs, but it doesn’t matter too much. The scores were pretty much always around 97%, plus/minus a few percentage points.

Trends might be interesting for learning about activity levels, but that’s a different story from this comparison.

Steps Count

Steps Count, Oura Ring Gen2 vs. Gen3
Steps Count

If you have seen the other data comparisons, you may wonder why there are no gaps in the activity data.

Easy answer: An Oura ring can’t capture most of the sleep / readiness data it analyzes when the battery gets too low during that night. Steps data, however, is measured until it runs out of battery completely.


There is one day with an extreme difference in steps count (which is far from the day when the activity score was extremely different).

I probably forgot to wear the Gen2 ring for a while while I had the Gen3 ring on my finger, I assume.

(It could also be that I did something with a lot of movement with my right hand, but I doubt that; the difference is too great for that.)

Otherwise, steps counts ended up very similar to each other, with a higher count usually happening on the Gen3 ring, as I would have expected (since I wore it on my dominant hand).

Calorie Burn

Looking at active and total calorie burn, and back up to steps count and activity score, provides some insight again.

First off, the simple: The majority of the time, the two generations of the Oura ring are in agreement. With some differences, but not outrageous ones.

Activity Burn (Active Calories), Oura Ring Gen2 vs. Gen3
Activity Burn (Active Calories)
Total Burn (Calories), Oura Ring Gen2 vs. Gen3
Total Burn (Calories)
The two sets of data above (active and total calories, Oura Ring Gen2 and Gen3) brought into one graphic
The two sets of data above (active and total calories, Oura Ring Gen2 and Gen3) brought into one graphic

Steps, activity burn, and total burn run nicely parallel to each other. Here, for example, are just the steps and the activity burn:

I also played with getting the Pearson coefficient for those measures calculated, which says something about the (weaker or stronger) relationship between data sets.

According to that, too, steps and activity burn influence each other very strongly.

A Note on Activity Score (vs. Steps or Calories)

The activity score as a measure of the balance between activity and rest (with the intensity of activity also playing a role), is *not* simply a reflection of steps. In fact, the relationship of those two values is very weak!

What this means is that you shouldn’t consider the activity score to be the same as the (usually 10,000) steps goal on most wearables; it’s more complicated and sensible than that!

Inactive Time

Where steps and active burn are positively correlated (duh, you should burn more calories when you move more, i.e. take more steps), steps and inactive time are negatively correlated.

You move more, you are inactive for less time. But is it just that?

Inactive Time, Oura Ring Gen2 vs Gen3
Inactive Time

Inactive time alone, of course, only shows that the rings can be in more or less agreement.

Generally, I’d say it’s “more,” but as you can see, even with a single person wearing two rings (on two different hands, for the most time), the inactive time “seen” by the rings can be very similar–or it can differ by an hour.

(Again, I’m not counting the outlier value, which is probably from a time I didn’t wear the Gen2 ring–which would have it discounting that time.)