Visible is designed specifically to integrate with the Polar Verity Sense armband. We use this device because to provide the best possible pacing tools, we require:
Continuous data
Most wearables do not capture your heart rate in real time. Instead, they measure your heart rate once every 5-10 minutes (with the frequency increasing if you start a “workout”). Even if you set heart rate alerts on one of these devices, they will often only notify you when it’s too late.
High accuracy data
Optical heart rate sensors work by using light to measure blood flow in capillaries beneath the skin. The top of your wrist is a convenient place for a watch, but is a challenging location for even the best sensors. Wearing on the arm offers our optical sensor an optimal amount of blood flow to gather heart rate data with accuracy comparable to that of an ECG chest strap.
Consistent data
Capturing consistent data from a single device also allows us to build better, more reliable algorithms to help measure and manage invisible illness.
That’s why for now, we don’t support other wearables like Apple Watch, Fitbit or Garmin. This may change in the future, as wearable technology improves.
In the meantime, you can always use Visible's free app without purchasing a wearable.