FORMILE — Bike Fit

A clearer next step for your riding position.

Record a side-view video or import a photo. FORMILE finds the joints, measures the angles and suggests what to adjust on your bike. Add your height to estimate adjustments in millimeters; crank length is optional.

• Record 8–15 seconds of video inside the app, without audio.
• Import photos and videos from Photos or Files.
• Automatically select useful video frames near leg extension.
• Explore knee flexion, hip, elbow and torso angles with reference ranges.
• Start with saddle height, then reassess saddle position and reach to the handlebars.
• Change one setting and compare before and after in the same view.
• Keep sessions, notes and exported reports. Manual point editing is also available.

Made for road and gravel riding. Film directly from the side, with the whole rider and bike visible. Close-fitting clothing helps the app locate joints. Angles and millimeter recommendations are estimates based on a 2D view and your profile.

Private by design: recognition runs on your iPhone. Recordings stay in the app unless you export them. No account, subscription, credits or advertising.

Store images show a demonstration with example profile values.