Fitbit announced the Charge 4 this month last year as its most advanced fitness tracker with built-in GPS and SpO2. Data from the latter sensor was previously only accessible in the Fitbit app, but ...

MFine, a health tech startup in India, has developed a free mobile app that turns a smartphone into a blood oxygen saturation meter. The beta version of the app is currently available on Android ...

Fitbit started the year by becoming a part of Google’s hardware division and is today making a sizable update by rolling out blood glucose tracking to its Android and iOS app. The Fitbit Sense’s ECG ...

When Fitbit launched the Charge 4 fitness band, one of the features we found the most interesting was its ability to estimate users' blood oxygen saturation levels through its SpO2 monitor. Users ...

The Fitbit Sense 2 is rated for 6+ days of battery life, but many owners are seeing their watch die in 1–3 days — or even within hours after a firmware update. The most common culprit is the SpO2 ...