CycleSync

CycleSync is a free app that keeps dozens of independent speakers playing the same song at the same instant across a whole ride; no perceptible latency between speakers, and no need for anyone to stay in range or in line of sight. Every rider's phone uses GPS as a highly precise shared time reference, so playback stays in lockstep whether you're side by side or spread across a mile of road. Instead of a dozen speakers fighting each other, the whole ride moves like a rolling nightclub. One wall of sound from the front of the ride to the back. WORKS WITH ANY SPEAKER Brand-agnostic: any speaker with an aux / line-in plays as one: JBL, Soundboks, homemade rigs, all together. Plug your phone into your speaker, join the room, and you're part of the wall of sound. WHAT YOU CAN DO - Host a room and share a short code — everyone else joins in seconds - Queue a playlist ahead of time so it's ready before you roll out - Make announcements that play over the music, everywhere at the same moment - Ride as a listener with nothing to set up except joining the room! NO EXTRA HARDWARE On Android, the app syncs entirely on its own. Just your phone, your speaker, and if needed a USB-C audio dongle. Free, and no account required to ride along. MADE FOR Group rides, bike parties, parades, festivals, and sound-system crews. Anyone who wants a scattered string of speakers to play as one. PRIVACY CycleSync doesn't track you, show ads, or sell your data. GPS is used only as a shared timing reference, never to map or track your location. You're location data never leaves your device. Full policy: https://cyclesync.us/privacy