RoadFitter — one of the ten apps we publish ourselves.
view on the app store ↗ ios · iphone & ipad
RoadFitter measures joint angles while you pedal, using the camera, and turns them into numbers instead of guesswork. It's one of ten apps published under Digitalbucht's own name — a working example of what native iOS development here looks like, not a second sales page. The full product story lives on its own site, roadfitter.de/en.
What it does, in short
Stand a phone or tablet up side-on and pedal — RoadFitter finds your joints and measures the angles across the whole pedal stroke, then turns the result into a concrete adjustment in millimetres. A live mode talks you through the sequence with a spoken coach, or you can scan an existing video, or measure manually with live angles on screen. A digital plumb line runs over your own still frame, and a history per bike shows before and after.
Why this page exists
Digitalbucht builds apps for clients, and publishes its own as proof that the work is real. Of the ten, this is the one with the deepest domain of its own — roadfitter.de/en already covers bike fitting, saddle height and the full feature set in detail, so this page stays short on purpose rather than duplicating that ground.
- Works with any bike type: road, gravel, time trial/triathlon, indoor, city or kids' bikes
- iPad supported, with a two-column report layout
- No rollers needed — lean the bike against a wall and pedal backwards
- Runs entirely on the device, without an account or an upload
RoadFitter gives numeric reference points from camera measurement — it does not replace professional bike fitting, particularly for existing pain, injury or a bike that has never fitted comfortably. Digitalbucht is the sole proprietorship of Emil Deak, based in Wülfrath, Germany.
Data and privacy
All image and pose analysis runs on the device itself, through Apple's Vision framework — video, camera images, joint points and angles never leave the phone. An imported video is deleted automatically once it's been analysed. Personal details such as name, height, weight, gender or age are deliberately never collected. Besides purchase data and a support email you choose to send, nothing leaves the device. No adverts, no tracking.
Full terms of use and privacy policy for all apps: Apps: terms & privacy.
More: all apps · the full product page at roadfitter.de/en.
Last updated: August 2026
Describe the idea. We will scope it.
Two sentences are enough: what's stuck, which systems are involved, when it needs to be ready. Reply usually within one working day.