Joint Canvas
Touch and drag hip, knee and ankle pivots on an interactive 2D bike to see kinematic alignment and pedaling efficiency.
BikeFit: Saddle Angles turns biomechanical fitting into a calm routine. Drag joints, set saddle height, and see your bottom-stroke knee flexion in real time, no signal needed.
Try the fit labSee featuresTouch and drag hip, knee and ankle pivots on an interactive 2D bike to see kinematic alignment and pedaling efficiency.
Compute seatpost extension and fore-aft saddle position from LeMond and Holmes formulas.
Confirm the 25-35° knee window to steer clear of anterior knee pain and hamstring strain.
Work out stack and reach for relaxed endurance fits or an aggressive aero tuck.
Store separate geometries for road, time trial and gravel bikes, plus a setup log, all on your device.
No cell signal in the race pits or on remote trails? Every tool still works, fully offline.
🚴 We are a small crew of riders and tinkerers who got tired of guessing at saddle height and ending long rides with sore knees. BikeFit: Saddle Angles is the tool we wished we had in the garage.
🎯 Our mission is to make biomechanical fitting clear and stress-free for road cyclists, gravel riders, mountain bikers and triathletes, so good position is never a mystery.
📐 The app gives you an interactive joint canvas, LeMond and Holmes saddle calculations, a bottom-stroke knee checker, reach and stem matching, and a vault for every bike you own, all working offline.
Dial it in. Ride it out.
Effective Date: October 2026
BikeFit: Saddle Angles does not collect, store or transmit any data. Everything runs locally on your device.
None. We do not collect personal information, measurements, fit profiles, device identifiers or usage data. Your inseam, joint angles and bike geometries never reach us.
Because we hold no information, we do not use, analyze, share or sell it. Calculations happen on your device only to show you your results.
Anything you save, such as bike profiles in the Fitting Vault or setup log entries, stays in the app's local storage on your device. There is no cloud storage or server sync.
The app contains no analytics, advertising networks, social plug-ins or trackers, and it needs no internet connection to work.
With no data leaving your device, there is nothing to intercept. Your saved fits are protected by your device's own security features, such as its passcode and encryption.
We do not knowingly collect information from anyone, including children under 13, so the app is consistent with COPPA. It is safe for young riders to use with a parent's guidance.
You are in full control. There are no accounts to create. To delete all saved profiles and logs, simply uninstall the app.
If this policy changes, we will update the date above and publish the new version on this page. Our core promise of collecting nothing will stay the same.
Questions about privacy? Write to privacy@bikefitsaddleanglesapp.com.
💬 Got a question, a fit story or an idea for the next feature? We love hearing from fellow riders, so drop us a line.
⏱️ We reply to every message within 24-48 hours.