JoyFit
BIKE FITTING, DEMYSTIFIED
Pre-fitting geometry tools + self-setup adjustment helpers + knowledge academy. Five sub-modules covering frame comparison, fit assessment, discomfort diagnosis, multi-bike management, and educational content. All tied together for the rider who wants a confident, evidence-based fit without the cost of a studio session.
Five Sub-modules
From frame selection to on-bike adjustment — every tool ties to a clear educational context.
Frame Geometry Hub
14-brand frame database, Stack & Reach calc, 2-frame compare, geometry overlay viz.
- ✓Road / Gravel / MTB / Triathlon — 4 categories
- ✓4–6 sizes per model with full geometry
- ✓Side-view overlay + side-by-side parameter compare
Stack & Reach Calculator
Lemond 0.883 + 1.09 dual formulas, flexibility correction, three posture presets.
- ✓Enter height / inseam → derive ideal geometry
- ✓Enter frame params → assess fit
- ✓Saddle height / fore-aft / stem length recommendations
AI Fit Assessment
Step-by-step: body metrics → bike params → posture habits → 6 module adjustment recommendations.
- ✓Saddle height / fore-aft / angle
- ✓Stem length / angle / spacers
- ✓Crank length recommendation
Discomfort Diagnosis Wizard
Body-region interactive diagnosis (neck / shoulder / back / knee / wrist / saddle) with cause probability and adjustment plans.
- ✓6 regions × multi-scenario questions
- ✓Red / yellow / green alerts + see-doctor advice
- ✓Anterior / posterior / medial / lateral knee — 4 subtypes
My Fit Profile
Save your body data, track each fit assessment, manage bike collection, bookmark knowledge articles.
- ✓Per-bike independent profiles
- ✓Body data + flexibility profile
- ✓Local storage, no account required
Quick tools
JoyOne ride preview
Your most recent JoyOne ride, embedded live. The fit analysis below works best when paired with a ride snapshot — long climbs and low-cadence efforts both stress the body differently.
Mandatory disclaimer
All JoyFit recommendations are general reference material. They are not a substitute for medical diagnosis, professional bike fitting, or an in-person session with a certified fitter. Adjustments should be made incrementally and tested at low intensity. Persistent pain, joint injury, or pre-existing medical conditions warrant a doctor's visit first.