Before you act on a change, you should know the recordings are clear, the repeated views agree, the adjustment is mechanically possible, and the result can be checked on real rides.
The method is public. Personalized fitting is not.
You can explore the method, run the setup check, review labeled example reports, and submit a free bike-fit request. Public accounts and personalized results remain gated until release checks finish.
Example screens use illustrative rider information. They are not customer results, testimonials, validation evidence, or a promise of access.
02DESIGN DECISIONS
A clear next step starts with evidence that agrees.
Roth checks the phone setup, compares two side recordings made without changing the bike, adds a front view, and starts with one change you can undo. You then check that change while the bike is held indoors and across three real rides.
No guidance when a recording fails a quality check
Recording quality, matching views, and confidence in a change are checked separately
Only one suggested adjustment at a time
Your starting setup and return instructions stay with every change
03WHAT ROTH MEASURES
Real rides—not promises—show whether a change holds up.
Roth publishes results only after using a clear testing method, a varied group of real riders, and qualified review. The evidence program focuses on recording success, repeatability, fitter agreement, and rider-reported outcomes.
Recording success across supported phones
Repeatability between matching side views
Agreement with qualified fitter review
Rider outcomes across the complete follow-up period
04REAL-WORLD TESTING
Personalized results open only after release checks pass.
Roth is accepting free-fit requests while personalized delivery completes release checks. Before that path opens, the method must be compared with independently measured reference fits and qualified fitter assessments. Expert Review remains separate and is not available.
Testing on a useful range of real phones and riders
A written process for recording and comparing views
Independent comparison with qualified fitters
Follow-up through all three ride stages
Hands-on testing of privacy, deletion, rollback, and safety controls
05OPEN CORRECTIONS
Show how results were reached—and correct mistakes openly.
Future results pages should explain which model, automatic policy, and method were used, whether optional expert help was requested, which riders were included or excluded from validation, when the work was done, and what its limits were. A newer method should never quietly rewrite an older rider report.