Best Smart Ring: SLEEP 💤 – and what about OURA 3?
How Did Oura 3 Perform in the Sleep Lab? Did it match the results of Oura 4? An Appendix to the Big Comparison!
This article serves as an appendix to the big smart ring comparison and the results from the sleep lab.

And since it took some time to process this topic, I started to doubt the results. There was no other choice but to dive back into the Oura 3 data and incorporate it into the final results.
But surprise, surprise—my test account subscription for Oura 3 had expired. Just as "no pain, no gain" applies, so does "no Oura subscription, no data."
Would you pay around $5.99 USD just to find out if Oura 3 tracks as well as Oura 4? 🤔
I won’t keep you in suspense—I paid the $5.99 USD. And I might end up paying even more because... I still haven’t canceled the subscription. 😅
The comparison of hypnograms from the perspective of the apps looks like this:

The results in the form of a hypnogram are as follows:
The complete set of confusion matrices looks like this:
The final graph of all devices looks like this:
We can therefore say that the results from Oura 3 are at a similar level to those of Oura 4.