If you're into cycling, the Runtastic Speed & Cadence Sensor and Heart Rate Monitor are exceptionally useful tools to turn your phone into the best cyclometer it can possibly be.

Wahoo Fitness has launched the world's first Bluetooth 4.0 wireless speed/cadence sensor, allowing cyclists to monitor their performance on the iPhone 4S.

The speed/cadence combo is among the oldest and most widely used of cycling sensors and is supported by most every ANT+ device. The speed-only and cadence-only sensor types, however, are newer and ...

The Apple Watch has a new feature in watchOS 10 that enables direct pairing of speed and cadence sensors for more nuanced bike ride tracking. We go hands-on with the feature.