After installing the recent Watch OS update 1.0.1, a number of Apple Watch owners have found that the device’s heart rate monitor has stopped working. Under general use, the Apple Watch should monitor your heart rate when in the background, taking readings every 10 minutes to update the health app on the device. However, with the 1.0.1 update, the monitor may only work when directly instructed to do so, and when put in the background it will pause and stop taking readings. Continue reading →