Live bump index
Explain phone placement and run a short stationary calibration, then see the current segment, speed, distance, and colored route.
Ride summary
Review average index, maximum impact, and the three roughest segments after a ride.
Route compare
Compare repeat routes by distance, relative index, and trend to see which one is smoother for your next trip.
Vehicle profiles
Keep local profiles for bicycles and e-bikes, with calibration that matches how the phone is mounted.
GPX / CSV export
Choose an export and use Apple's share sheet to carry the track, segment index, and impact fields with you.
On-device controls
Rides, drafts, settings, and deletion stay local. There are no ads, accounts, subscriptions, or developer data services.
Use cases
From one ride to your own road timeline
Choose a smoother commute
Compare repeat-route index and trend as one input for the next route decision.
Review one sharp bump
Inspect a segment, impact value, and published formula without presenting a personal index as a certified road rating.
Start with no history
The zero-data Home still offers a working Start ride action; demo records appear only with an explicit test/demo launch argument.
Permission denied
The app explains unavailable capabilities and keeps a usable local fallback instead of trapping you behind a permission wall.
FAQ
Privacy, measurement, and limits
Does BumpRoad upload my rides?
No account, developer network service, advertising, analytics, tracking, or cloud ride history is used in the current version. You choose when an export enters Apple's share sheet.
Is the index a road-safety rating?
No. It is a personal relative record based on device sensors and route segments, not a substitute for road, vehicle, health, or safety judgment.
Is it made for children?
No. BumpRoad is a general rider utility and does not require entering another person's information.
Where are the legal pages?
Settings exposes Privacy Policy, Terms of Use, and Support; the public site provides complete English-first and Chinese text.
Official information and support
Read the product boundaries, local-data controls, privacy policy, and terms before release.