Perfect Your Cycling Posture with DIY Bike Fit

Drop-bar bikes — road, gravel and cyclocross. The recommended angle ranges are based on drop-bar riding positions, so they do not apply to flat-bar bikes such as hybrids, mountain bikes and commuters.

• Shoot from directly at your side, level with the bike — not from in front or behind.
• Have the near pedal at the bottom of the stroke.
• Get your whole body and the whole bike in the frame.
• Even lighting and a background you contrast against will help detection.

Take the photo in the app or pick an existing one from your gallery. Having someone else take it, or using a tripod and a timer, is easier than it sounds.

Detection needs to see a whole person from the side. Retake the photo against the points above — most failures are a partly cropped body, an angled view rather than a true side-on one, or a rider who blends into the background.

Automatic detection is not always exact, so every point can be corrected. Open the point editor, then:

• Drag any point — or its label, which works as a handle — to move it.
• Pinch to zoom and pan, so you can place a point precisely.
• Use reset to return every point to where it was detected.
• Save your changes. The measurements are recalculated.

Each angle is compared against a fixed recommended range and marked in range or out of range.

Change one thing at a time, take another photo and compare. Small adjustments are easier to judge than large ones, and there is no limit on how many photos you can measure. The knee angle is the one most affected by saddle height: too straight suggests the saddle is high, too bent suggests it is low.

Nothing is stored between sessions — that is deliberate. Each photo is measured on its own and nothing is kept when you leave the app. If you want to keep a result, take a screenshot before closing it.

No. Pose detection runs entirely on your device, and your photos are never sent to our servers — we do not operate any. The full detail is in the privacy policy.