ROTHBIKE FITStart free bike fit

Guided online bike fit

How your free online bike fit works.

Skip the conflicting advice and long adjustment lists. Capture a repeatable view, see the most useful first change, and learn whether it holds up on real rides.

Start my free bike fit Explore the four stages
A side view of a cyclist riding on an indoor bike stand.
GUIDED RECORDINGGet a clear view before giving guidance
01—04

The complete loop

One clear next step at a time.

01

PREPARE

Get the phone ready before pressing record.

Fix the recording before it can affect your result. You see the one setup correction that matters most, and recording begins only after the required checks pass.

CAMERA SETUP CHECK4 / 5 ready
  • Bike secure on an indoor stand or rollersReady
  • Full rider and bike in frameReady
  • Main camera on the back of the phoneReady
  • Phone straight and levelMove left
  • Clear light and steady pedalingReady
02

COMPARE

Repeat one side video without moving the phone.

Record the same view twice so a one-off camera or pedaling difference does not become a false adjustment.

FIRST SIDERecorded
REPEAT SIDERecorded

Recordings match These sample side views agree closely enough to continue.

03

CHANGE

Make one small change you can undo.

Your result shows what was noticed, why one change comes first, what to measure, what warnings apply, and how to return to your starting position.

WHY THIS CHANGEWhat was noticed and how certain the result is
WHAT TO DOOne measured action
WAY BACKSaved starting setup
04

CHECK RIDES

Learn what happens beyond the indoor setup.

Short, medium, and normal-duration rides reveal whether an observation holds when fatigue, terrain, and real riding time enter the picture.

01Short30 min
02Medium75 min
03NormalNext

A useful stop is a result

No clear evidence means no forced recommendation.

  • Video is unclear or the two side recordings disagree
  • Symptoms worsen or control is affected
  • The bike cannot make the change safely
  • The situation needs a fitter, mechanic, or healthcare professional

Free for riders

See if your setup is ready for a free bike fit.

Start my free bike fit