# RoadFitter: Live Bike Fit — Saddle Height & Knee Angle > Saddle Height & Knee Angle (iPhone/iPad app by Emil Deak.) - Source: https://appshunter.io/ios/app/roadfitter-live-bike-fit/id6792840910 (this page in markdown: same URL + `.md`) - Developer: [Emil Deak](https://appshunter.io/developer/1883312248) - Category: Health & Fitness - Price: Free with in-app purchases - Age rating: 4+ - Requires: iOS 17.0 · 12 MB - Languages: American English, German (Germany) - Released: 2026-07-26 - Data updated: 2026-08-30 - User reviews in markdown: https://appshunter.io/ios/app/roadfitter-live-bike-fit/id6792840910/reviews.md ## What is RoadFitter? Your bike fit — live, voice-guided, on your own bike. RoadFitter draws your skeleton LIVE over the camera image and coaches you through your fit with voice guidance — while you sit on your bike and pedal. No uploads, no waiting, no subscription. HOW IT WORKS • Prop up your phone side-on, get on your bike, start pedaling • The voice guides you: calibration, measurement, results • Knee, torso, shoulder and elbow angles — measured live across ~30 pedal strokes, never a single snapshot • Clear recommendation (e.g. "raise saddle ~10 mm"), then re-test instantly: before/after to the degree THREE MODES • Live Fit: guided fitting with a voice coach — our core feature • Manual Measurement: all angles in real time while you adjust your bike • Video Scan: record a short clip, full analysis of every pedal stroke SADDLE FORE/AFT — YOUR DIGITAL PLUMB • On your own photo, at the forward crank position: a plumb line dropping from your knee • Slide it with the arrows from the knee joint to the front of your knee and see whether it sits over the ball of your foot • Deliberately no traffic light: there is no universally correct saddle position — you decide • Re-measure after adjusting and the change is shown in millimeters FOR EVERY BIKE Road (aero & endurance), gravel, TT/triathlon, city, step-through, spin — and kids' bikes with a safety-first approach. YOUR FITS ARE KEPT • Every measurement is saved per bike — with photo, angles and knee plumb • Find your way back after transport, a saddle swap or a rebuild HONEST & PRIVATE • The knee angle is the only scientifically validated, injury-relevant value — and that's exactly what we tell you. Everything else is guidance based on comfort and riding style. • Angle targets apply regardless of gender (current evidence). • Your measurements and videos stay on your iPhone. No cloud, no account. • No black box: your angles are pure geometry — transparent math, not AI hype. A professional bike fit costs $150–400. RoadFitter brings the key adjustments home — as often as you like, for all your bikes. Note: RoadFitter is not a medical device and does not replace a professional bike fit or medical advice. If you're in pain, see a professional. ## Pricing and in-app purchases Base price: Free. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | RoadFitter Pro | $34.99 | one-time | ## Version history (last 5 releases) ### 1.4.1 — 2026-08-26 Housekeeping release: clearer wording in the fit report (the 33° target is now called a marker), an updated privacy-policy link, and RoadFitter is now part of Digitalbucht. ### 1.4 — 2026-08-14 RoadFitter now runs on iPad — and not as a stretched iPhone. • On iPad the report reads in two columns: the annotated photo, your knee angle and the one adjustment in millimetres on the left; every angle, the knee plumb, measurement quality and the limits on the right. Same order as before, side by side instead of stacked. • Your bikes sit beside the add-bike form instead of above it. • Live fit, video scan and history use the full width. • Measuring is identical to iPhone: same analysis, same target ranges, same numbers. Portrait stays locked on iPad too — the measurement depends on it. ### 1.3 — 2026-08-13 The results screen is rebuilt — and the live fit, video scan and history finally show the same thing. • The essentials first: knee angle and the one adjustment, in millimetres. Everything else expands when you want it. • New: how far you are from the target range. Red now says "5° to go" instead of just "red". • History shows the full report instead of a shortened version. • The annotated photo now appears after a live fit too — and in the video report the values are finally legible. • A set-up step before the live fit: live camera, skeleton, start when you are ready. Nothing begins before you say so. • Front camera for the live fit and manual measurement — see yourself instead of measuring blind. • Large corrections now get larger steps. 50 mm in 5 mm increments was never realistic. • Plenty of smaller fixes: the keyboard can be dismissed, leftover English strings are gone, the way into a fit is clearer. ### 1.2.1 — 2026-08-06 Minor bug fixes and improvements. ### 1.2 — 2026-07-28 Saddle forward or back? Now you can see it. The digital knee plumb sits on your own still frame — no string, no weight, no guessing. Nudge it onto the knee joint with the arrows and see exactly where it falls. NEW IN THIS VERSION • Illustrated recording guide Film side-on at 90 degrees, at the same height — the most common reason a measurement turns out useless, now explained in one drawing. In onboarding, in the live fit and in the video scan. • Kids' bikes: safety before optimisation On a kids' bike what matters is that the child can stand and stop safely. So reach and riding-position suggestions are gone there, and any hint to raise the saddle now always comes with the condition that the feet still reach the ground. • Support that actually arrives Write to us straight from Settings — pick a topic, and app and device details are attached automatically so a bug report is actionable without follow-up. • Clearer wording The video scan doesn't need a turbo trainer: leaning the bike and pedalling backwards works just as well. And "Manual Measurement" is manual in name only — it runs live through the camera. It now says so. ALREADY IN SINCE 1.1 • Concrete fine-tuning tips, even when everything is already green • An honest explainer on why video and live readings differ slightly • A hint when the knee is very strongly bent at the top of the stroke Everything still runs on your iPhone. No account, no upload, no subscription. ## More apps by Emil Deak - [Custos: Survival Prepper](https://appshunter.io/ios/app/custos-survival-prepper/id6760218134) - [CNCMate: Speeds and Feeds](https://appshunter.io/ios/app/cncmate-speeds-and-feeds/id6760557576) - [BeamMate · Laser Engraver App](https://appshunter.io/ios/app/beammate-laser-engraver-app/id6760578283) - [Pantry Wizard: Fridge Recipes](https://appshunter.io/ios/app/pantry-wizard-fridge-recipes/id6773112519) - [CarbTrail: Fuel & Hydration](https://appshunter.io/ios/app/carbtrail-fuel-and-hydration/id6777919889) - [MeterWorks Vibrometer](https://appshunter.io/ios/app/meterworks-vibrometer/id6779408803) All apps by Emil Deak: https://appshunter.io/developer/1883312248 ## Related topics [bike fitting](https://appshunter.io/ios/topics/bike-fitting) · [bike fit](https://appshunter.io/ios/topics/bike-fit) · [fork to fit](https://appshunter.io/ios/topics/fork-to-fit) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-30.*