NoctO₂O2Ring S Tested
Ring oximeter · worn on a finger all night
- Live SpO₂, pulse and perfusion
- Downloads the ring’s recordings
- Change the ring’s own alarm from the app
Comfortable for the whole night; the most tested device with NoctO₂.
NoctO₂ works with popular Bluetooth ring, wrist and fingertip oximeters. Here’s what each one can do with the app, with links to the makers for photos, prices and specifications.
Comfortable for the whole night; the most tested device with NoctO₂.
Same technology as the O2Ring S. Tell us how it works for you.
Same technology as the Checkme O2 Max. Tell us how it works for you.
Great for live monitoring; NoctO₂ saves the readings itself while connected.
Not yet tested on a real device. If you have one, we’d love to hear how it goes.
For overnight use, a ring or a wrist unit with a soft finger sensor is the most comfortable. Fingertip and handheld models are better for short checks.
| Device | Type | Live readings | Recordings | Device alarm settings | Status |
|---|---|---|---|---|---|
| Wellue O2Ring S | Ring | Yes | Yes | Yes | Tested |
| Wellue O2Ring | Ring | Yes | Yes | Yes | Tested |
| Wellue O2Ring SF | Ring (small) | Yes | Yes | Yes | Supported |
| Wellue Checkme O2 Max | Wrist | Yes | Yes | Yes | Tested |
| Wellue SleepU | Wrist | Yes | Yes | Yes | Supported |
| Lepu-Creative SP-20 | Handheld | Yes | No | Yes | Tested |
| EMAY SleepO2 | Wrist | Yes | Not yet | No | Experimental |
“Recordings” means NoctO₂ can download nights the device stored on its own, for example when the iPhone wasn’t nearby. Live readings are always saved by NoctO₂ while connected.
Tell us which oximeter you use. Requests decide which device we add next, especially models that publish how their Bluetooth works.
Try Demo Mode in the app (Settings → Demo Mode) to see a simulated night, alarms included, before you buy anything.
We don’t sell devices and don’t earn anything from these links. Product names and links belong to their makers; NoctO₂ is not affiliated with or endorsed by Wellue/Viatom, Lepu-Creative or EMAY.