A bicycle bell for a handlebar-mounted iPhone

Tap anywhere on the screen to ring — or ring straight from the Lock Screen, without unlocking your phone. Also works from Control Centre, the Action Button, Back Tap, Siri and a Live Activity that sits on your Lock Screen for the whole ride.

Why it exists

A Lock Screen widget cannot play audio. Bike Bell uses an iOS Control backed by an audio playback intent instead, which the system runs inside the app itself — so the bell rings while the phone stays locked, with the phone still clamped to your handlebars and your gloves still on.

Details

Three bell sounds, synthesized rather than sampled: Classic, Double and Trill
Rings even when the phone is on silent
Optional audio ducking so music and navigation dip rather than stop
Warns you when audio is routed to headphones, or when the volume is too low to be heard
No account, no network, no analytics, no data collection of any kind