Azumio's Instant Heart Rate app has passed the 10 million download mark, the company announced this week, making it one of the most popular health apps on the market. The app claims to measure a ...

There are plenty of apps that take advantage of your phone’s hardware to do obvious things. You can turn your phone into a GPS unit or even a compass by using the accelerometer and GPS receiver. You ...

When it comes to tracking your heart rate, nothing beats using equipment designed for such a purpose, such as chest strap heart rate monitors or electrocardiograms. However, if you're looking for an ...

Palo Alto-based Azumio, makers of the popular Instant Heart Rate app and a number of other mobile health apps, launched a new free app called Argus, which aggregates readings from many of Azumio's ...

Micro-fluctuations in the time between heartbeats are proving a helpful indicator of mental health, stress levels and exercise capacity. They could even provide insight into how well you are ageing.

To get a sense of what average running heart rates look like for the pros, we peeked at some of their public Strava posts.