FAQ
Frequently asked questions about bike fitting
Position on the bike, settings, pain, how the app works and data privacy. If your question is not here, write to us.
How do I calculate the ideal saddle height?
The reference method is the LeMond method: inseam in millimetres multiplied by 0.883. You get the distance from the bottom bracket axle to the top of the saddle. The target knee angle in extension is 141° to 152°. FramIQ refines this calculation by measuring your real angles by video. Calculator and complete guide.
Why do my knees hurt when cycling?
Pain at the front: saddle too low or too far forward. At the back: saddle too high. On the outer side, the iliotibial band: saddle too high or a misaligned cleat. In most cases, a few millimetres of correction are enough. Diagnosis by zone.
Cycling and back pain: what is the cause?
Most often a reach that is too long — stem too long or handlebar too low — forcing the spine into excessive flexion. Sometimes a saddle too high that rocks the pelvis. The ideal torso angle is 40 to 50° on the road, 50 to 65° on gravel.
How do I set up my cleats?
Three parameters: rotation, your foot's natural angle, generally 0 to +5° outward; fore-aft, pedal axle under the metatarsophalangeal joint; and Q-Factor, the width between the pedals. A left/right asymmetry is corrected with shims. FramIQ's cleat module is free and unlimited. Complete guide.
How do I choose the right frame size?
From stack and reach adjusted to your morphology. A size-M frame can vary by 20 to 25 mm of reach from one brand to another: comparing stated sizes is not enough. FramIQ compares your profile against more than 10,000 referenced geometries.
Is bike fitting useful for amateur cyclists?
Yes. A poor position is the leading cause of pain, whatever your level. A few millimetres of saddle height can eliminate chronic pain. An in-studio fitting costs €150 to €350; FramIQ makes the analysis accessible from €29.
How does the video analysis work?
FramIQ uses Apple's Vision Framework to detect 16 body points in real time with the iPhone camera, and calculates your joint angles on every pedal cycle. Processing is 100% on-device: no video ever leaves your phone.
What is the link between osteopathy and bike fitting?
Osteopathy identifies the mobility restrictions that distort your position: limited thoracic rotation, asymmetric pelvis, leg length discrepancy. Fitting alone does not correct those compensations. The expertise behind the app.
Does FramIQ replace a bike fitter?
For the majority of common cases, yes: mild pain, a bike change, a position check, a frame choice. For complex cases — significant asymmetries, chronic injuries, elite athletes — an in-person fitting remains superior.
What is free?
The cleat setup module, in full and with no limit: rotation, fore-aft, Q-Factor, asymmetry analysis, shim recommendation. Video analysis and the frame comparator require paid access. See pricing.
Which iPhone do I need?
iOS 18 or later, from the iPhone XS, 2018 models onwards. iPhone 12 or newer recommended. The app is designed for iPhone; iPad is compatible but secondary. No Android version is planned.
Can I do my bike fitting alone?
Yes. You need a stable phone mount, and ideally an indoor trainer. The app guides you step by step: measurements, calibration, video analysis, results and PDF report. Make sure you have a stable mount to hold the iPhone in side view.
Is my data protected?
Analysis videos never leave your device. Your morphological data is stored locally and synced via Apple CloudKit. Authentication is exclusively via Sign in with Apple, no stored password. FramIQ is GDPR compliant. Privacy policy (FR).
How often should I redo my bike fitting?
A fitting is not final. Redo it when you change bikes, after an injury, after a weight change of around 5 kg (11 lb), when you change discipline, or every season if you compete. Your flexibility changes, and so does your optimal position.
The simplest thing is to try it
The cleat module is free and unlimited. In ten minutes you will know whether the method clicks for you.
Free cleat module · video analysis from €29