Bike Guardian

Bike Guardian turns the phone on your handlebars into a second pair of eyes. Press the big green button and Rear Guard starts: the back camera watches the road ahead and the front camera watches the road behind you. Prefer the back camera alone? Switch to Ahead only above the button. BLIND-SPOT BARS - A bright red bar lights along the edge of the screen on the side where a vehicle is coming up behind you, and stays lit while it passes. - A wider, pulsing bar means the vehicle is very close. - Made to be caught in peripheral vision, so you never need to look at the screen. VOICE FOR DANGER ONLY - "Vehicle ahead" when you are riding toward a vehicle in your path at cycling speed. It stays quiet when you are riding slowly, such as easing past parked cars. - A vehicle right beside you makes its bar pulse. To also hear "vehicle close, left" or "right", turn it on in Settings. - Ordinary passing traffic stays on the bars, so the voice keeps its meaning. Spoken alerts for every vehicle can be turned on in Settings. CLOSE-PASS REPORT - On iPhones with LiDAR, the app measures how close passing cars were as they pulled ahead, and shows the closest after your ride. - It is a record, not a warning. REAR RADAR (OPTIONAL) - Have a Bluetooth rear bike radar? Compatible radars can connect in Settings, adding the distance to vehicles behind you, including ones your body hides from the camera. - Experimental: the blind-spot bars and voice still come from the camera. PRIVACY - Vehicle detection runs on your phone. - Ride recordings stay on your phone. Raw video sharing is off unless you explicitly opt in. Requires an iPhone that can use its front and back cameras at the same time. IMPORTANT Bike Guardian is a rider-assistance tool, not autonomous control. It cannot see everything: an unlit bar is not an all-clear. It does not replace your attention, shoulder checks, judgment, or local traffic law.