One part, several bikes

Power-meter pedals, a computer, lights, a wheelset. Plenty of parts move between bikes every ride, and until now each move needed a transfer — so most people didn't bother and the distance landed on one bike only.

Use one part on several bikes. On a component's page, Add to another bike puts it on a second or third bike while it stays on the first. Its lifetime distance now counts rides from every bike it's on, and a ride is only ever counted once. Transfer still exists for a true move. Removing the part asks which bike you mean. Service intervals stay with the part, not the bike — one reminder, whichever bike you rode.

Edit or delete a past installation. A component's History tab lists every period it spent on a bike, with dates and the distance ridden in that period. Past periods now have Edit record and Delete record, so a wrong date or a double entry is fixable instead of permanent. Periods can't overlap on the same bike, and the distance recalculates from your rides the moment you save.

Every part that was ever on a bike. A bike's Components tab has a collapsed Previously installed section listing each part that used to be there, with its dates and the km it did.

Starting distance is visible. Some parts had km on them before you started tracking here — a second-hand wheelset, a chain already on the bike. That figure was always part of your total but was shown nowhere. It's on the History tab now, and editable next to expected lifespan.

Fixed: removing a chain and fitting a new one on a ride day used to credit that day's ride to both parts. The ride now goes to the part that's on the bike at the end of the day, and anyone affected earlier had the extra km removed.