At a glance Expert's Rating Pros ・Light and comfortable to wear ・Nicely designed companion app ・Good sleep tracking performance ・Very cheap and no fees Cons ・Plain design ・Some syncing problems Our ...

The Luna ring doesn't have any standout features, but it's a solid alternative to Oura—provided you can find one.

The Renpho Lynx smart ring is a solid, subscription-free option for those who value simplicity and build quality over sophisticated looks and complex lifestyle guidance. Still, it falls behind ...