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.

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.