Car Back: Bike Radar

Car Back shows the cars behind you while you ride. It connects to your rear-view bike radar and turns the iPhone on your handlebar into a clear, glanceable radar screen – and your Apple Watch taps your wrist when a car comes in fast. THE RADAR • Every car behind you as a dot, placed by its distance • Coloured by how soon it would reach you, not just how close it is: green, amber, red • The closing speed next to each car • A red glow around the screen edges and a beep when a car comes in fast – even with the phone on silent • Choose how early cars turn amber and red APPLE WATCH (OPTIONAL) • Start a ride on your iPhone; your Apple Watch records it to Apple Health and the Fitness app, with heart rate, cadence, GPS route, distance, climb and effort • Live heart rate, heart rate zone and cadence on the phone, next to your speed, distance and ride time • A tap on your wrist when a car comes…