Velociraptor app ... display and alert for speed limits on OSM base

As I found no result in the OSM wiki:

Has anyone experience with this app Velociraptor?

I’ve been playing with it a little as does not have a speed display built in.

It seems to be a little slow on picking up the speed limit when you turn on to a new street and also if the speed limit changes. I think I have the speed alert setup but I had one area where I was definitely speeding and don’t recall an alert. The current speed display changes color based on speed though, kind of a interesting feature reminiscent of speedometers on some American cars of the 1940s.

The killer from my point of view (and the reason I’ve only played with it a little) is that it needs a data connection to do its magic and I usually run with mobile data disabled.