Noisli might be a bit more popular than Biostrap. We know about 1 link to it since March 2021 and only 1 link to Biostrap. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
Third source (biostrap.com): "People who are deficient in iron and other vitamins may also have low blood oxygen levels. That’s because iron is what binds to oxygen and carbon dioxide in the bloodstream. Deficiencies in vitamins including vitamin B12, vitamin C, and folate can also cause anemia and low oxygen saturation". Source: over 2 years ago
I use a website called noisli.com for the background noise. You can give it a try if you would like to. Source: about 1 year ago
Fitbit Charge - Activity and sleep tracking wristband
Noizio - Feeling that the noise of the big city is too much for you to bear?
Sleep App - Relax, meditate & sleep
MyNoise - Custom shaped online noise machines. Many Many generic sounds
ŌURA Ring - Advanced sleep and fitness tracker
A Soft Murmur - Ambient sounds to wash away distraction.