Cyclotron25

Cyclotron turns the phone on your handlebar into a bike computer. Big, legible speed at arm's length in daylight. Your route drawn as you ride. Every finished ride kept on the phone, so you can look back at it or ride against it. LIVE SPEED A Kalman filter fuses GPS with the motion sensor, so the dial moves within about two seconds of setting off instead of waiting for a satellite fix and drops back to zero just as quickly when you stop. RIDE STATS Distance, ride time, elapsed time, average and maximum speed, and metres climbed. All live, all on one screen. Tap anywhere to swap the map for the full set of numbers. ROUTE MAP Apple Maps rendered greyscale with your route behind you, and a follow mode that hands control back on its own after you pan. In landscape the map fills the right half of the screen. GHOST RIDES Pick any saved ride with a recorded route and it replays alongside you on the map, so you can see whether you're ahead of the last time you rode it. HISTORY Finished rides are kept on the phone, each with its route, full stats, and a chart of speed and elevation over time. AUTO-PAUSE Off by default, so your average covers the whole outing door to door. Switch it on and the ride pauses itself at traffic lights, the way a bike computer reports it. BUILT FOR THE HANDLEBAR A strictly monochrome face, contrast alone carries the hierarchy, which is what keeps it readable in direct sun. Recording continues with the screen off, and the screen stays awake while you ride with it on. PRIVATE BY DESIGN No account. No network calls. No analytics. Cyclotron has no networking code at all, your rides are measured on the phone, stored on the phone, and never uploaded anywhere.