The company's IPO status doesn't really tell you anything about whether the ring itself is worth your money - that's a seperate question. The Oura ring does track sleep and activity pretty well, and it's got a solid community of people using it. The main thing to consider is whether you actually need that level of detail about your sleep cycles and daily movement, since there are cheaper trackers out there that'll give you basics like steps and heart rate.
Where Oura gets interesting is the biomarker stuff - temperature, HRV, resting heart rate combined into their "readiness" score. Some people find that genuinely useful for tweaking their routine, others think it's mostly marketing fluff. The real cost to think about isn't just the ring upfront; it's their subscription model. You need a paid membership to get the full app and insights, which adds up year after year.
Here's something worth trying first: if you have an Apple Watch or a Garmin already, check what their sleep tracking actually shows you before dropping money on a dedicated ring. A lot of people realize after a week or two that they don't really act on the data anyway - it just becomes another notification. If you're someone who genuinely adjusts their schedule based on recovery scores, then yeah, the ring might click for you. If you're just curious about shiny health tech, start with what you've already got.