Observed arrival · 2026-10-25
How Bumpy? — a phone-based ride comfort meter
A free browser-based ride meter uses a phone’s motion sensor to estimate vibration on trains, trams, buses, cars, bikes, planes, and boats.
- For
- Passengers comparing ride comfort across transport modes
- Worth noticing
- It automatically excludes phone pickups and gaps, and stops after two hours or five minutes without readings.
Field notes
The page asks riders to place a phone flat on the seat and keep it in the same spot for fair comparisons; bike users are told to use a firm handlebar mount, so those readings reflect the bars rather than the saddle. Rides can be saved in the browser, sorted by smoothness or roughness, and exported as CSV or an image. The calculation applies ISO 2631-1 weighting, but the site says uncalibrated phone sensors make the results estimates rather than certified measurements.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
One card from the complete issue