Oura Ring Gen 4 Review (2026): I Tested It for 90 Days — Here’s the Honest Truth
Let’s get one thing out of the way first. The Oura Ring Gen 4 costs $349. Then $5.99 a month for the app. Over a year, you’re looking at $421 before you’ve tracked a single REM cycle. So the question isn’t “is this a good product?” — it clearly is. The question is: is it…