I use the Lookee Sleep Monitor: https://www.amazon.com/gp/product/B07DVYC3C8/ref=oh_aui_detailpage_o03_s00?ie=UTF8&psc=1 It has the thumb sensor, similar as far as Android and Apple phone only. Also has the vibration alert that you can set intensity and SPO2 level you want it to trigger at. No, I c...

Historically I've been using the Contec CMS50F wrist-worn oximeter, but in the past month I've been trying the O2Vibe. If anyone cares, these are my thoughts about the O2Vibe: Pros: -- The O2Vibe thumb-sensor is very nice, in particular how it wraps below the first knuckle. For me, it reliably stay...