Free, no login. Built by a coach to help you dial your setup and training. New ones added regularly.
Upload a Garmin or Strava ride and find the chainring that keeps your cadence in range on every climb and sprint — plus a time-in-gear breakdown.
● Live nowOptimal pressure from your weight, tire width, rim, surface, and conditions. Faster, grippier, more comfortable.
Coming soonA physics model of grade, weight, drag, and rolling resistance tells you the watts needed to take a segment.
Coming soonJoin the newsletter and I'll email you when each new tool drops, plus training tips you can use this week.