GO2SLEEP 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
If you're only concerned with sleep data, check out sleepon.us. Love mine. Source: almost 2 years ago
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