Version 1.4.9 adds support for Garmin Varia RTL515 and RVR315 radar sensors! Download Cadence on the App Store or Google Play
See how many vehicles are behind you and how fast they’re approaching, and turn on audio alerts for better awareness of the traffic behind you.
Garmin Varia can track up to eight vehicles at a time and is visible up to a mile away in the daylight.
You can find more details about how the Garmin Varia works with Cadence at What Third Party Bike Tracking Apps Integrate with Garmin Varia Radar?