Wahoo’s popular ANT+ Fisica dongle, which allows the iPhone to read signals from fitness gadgets like heart-rate monitors, pedometers and bike sensors, is probably most widely used fitness iPhone accessory since its release a little over a year ago. And today, Wahoo took the first step toward killing it.
We’re not sure yet how power consumption compares with that of ANT+, but it should be more or less comparable. Unfortunately, while Bluetooth v4.0 isn’t just Apple technology and should be included on Android (et. al.) high-end handsets as well, the 4S is the only Apple handset with the tech — it doesn’t exist on the 4 or below. Also, the HRM is the only piece of kit with the tech; no pedometer, powermeter or bike sensors are equipped with it just yet — so if you’re on a bike and need cadence you’re still stuck with a dongle, even with a 4S.