health tracker
Features on the Oura Ring Generation 3 at launch include heart rate tracking, improved temperature monitoring and period prediction.
The Amazon Halo app uses five health metrics designed to give users a comprehensive look at their health and wellness, and gives actionable recommendations to make improvements.
The 12-year-old French company is best known for its connected consumer health devices.
The global revenues for smartphone-connected fitness tracking devices and equipment will grow from $2 billion in 2014 to $5.