It might surprise you to learn that the Apple Watch isn't the only smartwatch you can use with an iPhone, and that the best smartwatch for iPhone can sometimes come from beyond the walls of Cupertino.

The latest models can record your ECG to detect irregular heart rhythms, help detect sleep apnoea, and deliver comprehensive smart features you'd find on a smartphone. So only consider buying one if ...

If you want to easily collect your weight and other data in the Health app on iPhone and iPad ... data measured by Apple Watch. They also have their most advanced smart scale out now for serious ...