Modern Buddy

What app are folks using to check speedometer error? Google Maps can give a GPS speed, sure, but I'm looking for something that's more readable while moving, and possibly record top speed reached on a given trip.

Opinions greatly appreciated.

I've been using Ulysse Speedometer for a while. It has current speed, trip distance, top speed, and other features.

https://play.google.com/store/apps/deta ... r&hl=en_US